Prasanna

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 5 Information Processing

Mark routes for the given locations.

Given below is a map of a town showing some important places/ landmarks. Divya wants to go to the library. One of the ways to reach the library from her house is shown below.

Observe the map and answer the following questions.

Question 1.
Name the location she passed in the given route.
Answer:
Bank and Post office.

Question 2.
From the library, Divya needs to reach pharmacy. Trace the path and name the landmarks between library and pharmacy.
Answer:
Park, Market, Hospital.

Question 3.
Trace another route from Divya’s house to reach library.

Question 4.
Mention any two places between museum and park.
Answer:
Pharmacy, Hospital, Market.

Exercise (Text Book Page No. 32):

Help the bus driver by marking the routes in the map to land the bus in bus stand.
Mark all the possible routes and suggest the best route.

Ways:

Question 1.
A → B → C → I → L → E

Question 2.
A → B → C → I → F → K → M

Question 3.
A → B → N → G → J → F → H → M

Question 4.
Write the shortest route.
Answer:
A → D

Question 5.
Write the longest route.
Answer:
A → B → N → G → J → F → H → M → K → E → L → D.

The quick way of finding 10 more than and less than a given number.

Colour the table in the next page by skip counting in tens as per the instructions given below.

1. Colour the numbers starting from 12 in blue.
2. Colour the numbers starting from 6 in pink.
3. Colour the numbers starting from 5 in yellow.
4. Colour the numbers starting from 9 in orange.

Answer:

After colouring observe the table and fill in the blanks.

Question 1.
10 more than 45 is _____.
Answer:
55

Question 2.
10 less than 45 is _____.
Answer:
35

Question 3.
10 more than 22 is _____.
Answer:
32

Question 4.
10 less than 22 is _____.
Answer:
12

Activity (Text Book Page No. 34):

Complete the blanks.

a.

Answer:

b.

Answer:

3rd Standard Maths Guide Information Processing Additional Questions and Answers

Question 1.
Anu wants to go to school, one of the ways to reach the school from her house in shown below.

Observe the map and answer the following questions.

(i) Name the location she passed in the given route.
Answer:
Bank, park.

(ii) From the school Anu needs to reach post office. Trace the path and name the land marks between school and post office.
Answer:
Left side in park.

(iii) Trace another route from Anu’s house to reach school.
Answer:
Right side in Bank.

(iv) Mention any two places between Fire station to hospital.
Answer:
Market, Pharmacy.

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 4 Time

Activity 1 (Text Book Page No. 28):

Look at the position of the hour hand and write the time in the given box.

Question 1.

Answer:
3’0 clock

Question 2.

Answer:
8’0 clock

Question 3.

Answer:
9’0 clock

Question 4.

Answer:
4’0 clock

Question 5.

Answer:
2’0 clock

Activity 2 (Text Book Page No. 29):

Draw the hands in the following clocks to show the given time.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Question 4.

Answer:

Question 5.

Answer:

Activity 3 (Text Book Page No. 29):

Tick the clock which shows the time mentioned below.

Answer:

3rd Standard Maths Guide Time Additional Questions and Answers

I. Look at the position of the hour and write the time in the given box.

Question 1.

Answer:
10’0 clock

Question 2.

Answer:
8’0 clock

Question 3.

Answer:
3’0 clock

II. Draw the hands in the following clocks to show the given time.

Question 1.
2’0 clock
Answer:

Question 2.
4’0 clock
Answer:

Question 3.
12’0 clock
Answer:

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 3 Measurements

Recall (Text Book Page No. 23):

Tick the heavier object.

Answer:

Question 1.
Find the number of 100g packets used to fill 3kg of rice.
Answer:
3kg =30 packets of 100g.

Exercise (Text Book Page No. 26):

Question 1.
Circle the odd one out.

i. a) gram
b) Kilogram
c) metre
Answer:
c) metre

ii. a) 50 g
b) 500 g
c) 100 cm
Answer:
c) 100 cm

iii. a) 1 m
b) 2 kg
c) 5 kg
Answer:
a) 1 m

Question 2.
Fill in the blanks.

i) 1000 grams = _____ kg
Answer:
1

ii) 2 kilograms = _____ grams
Answer:
2000

Question 3.
Write in short form.

i) gram = _____
Answer:
g

ii) Kilogram = _____
Answer:
kg

Question 4.
Find the number of bags to be used to fill the given items, if one bag can hold 100 g of the given items.

Answer:

Question 5.
Answer the following:

i) Price of 100g of ice cream is ₹ 20. Ramya bought 1Kg of ice cream. How much should she pay to the shopkeeper?
Answer:
Price of 100g ice cream = ₹ 20
Let 1 piece of ice cream = 100 g
Ice cream = 1 kg = 1000 g
No. of ice cream pieces for 1 kg = \(\frac{1000}{100}\) = 10 pieces
Price of 1kg ice cream = 10 × 20 = ₹ 200

ii) Price of 1 Kg of sugar is ₹ 50. Ranjith bought 2000 g of sugar. Find the amount she has to pay to the shopkeeper.
Answer:
Price of 1 kg sugar = ₹ 50
Ranjith bought 2000 g = 2 kg
Amount he has to pay to the shopkeeper = 2 × 50 = ₹ 100

iii) Saranya had 3 Kg of flour to be packed into packets of 500 g each. In how many packets can she pack the flour?
Answer:
Saranya had weight of flour = 3 kg = 3000 g
Weight of flour in a packet = 500 g
No. of packets = = 6 packets.

3rd Standard Maths Guide Measurements Additional Questions and Answers

I. Fill in the blanks.

(i) 3000 grams = _____ kg
Answer:
3

(ii) 4 kg = _____ grams
Answer:
4000

(iii) 4500 grams = _____ kg _____ grams
Answer:
4 kg 500 grams

(iv) 3250 grams = _____ kg _____ grams
Answer:
3 kg 250 grams

(v) 6 kg 400 gm = _____ grams
Answer:
6400.

II. Answer the following:

(i) Price of 1kg of rice is ₹ 60. Jaswitha bought 3000 g of Rice. Find the amount she has to pay to the shopkeeper.
Answer:
Price of 1kg of rice = ₹ 60
Jaswitha bought = 3000g = 3 kg
∵ 1kg = 1000 g
The amount she has to pay to the shopkeeper = 60 × 3 = ₹ 180

(ii) Samvardhini had 5 kg of Ice creams to be packed into packets of 500 g each. In how many packets can she pack the ice cream?
Answer:
Samvardhini had ice creams = 5kg = 5000g
∵ 1kg = 1000 g
Each packet had ice cream = 500g
∴ No. of packets can she packed = = 10 packets.

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 2 Patterns

Recall (Text Book Page No. 19):

Circle the odd numbers in the given sequence.

(i) 26, 29, 37, 42,

45
Answer:
29, 37, 45

(ii) 85, 84, 76, 65, 64
Answer:
85, 65

(iii) 11, 22, 33, 44, 55, 66.
Answer:
11, 33, 55

(iv) 357, 896, 572, 951, 865, 423
Answer:
357, 951, 865, 423

(iv) 952, 698, 342, 780, 920, 850.
Answer:
No odd numbers.

Complete the table from the above numbers.

Answer:

Observe the number chart given below. Colour the odd numbers with green and even numbers with blue.

Answer:

We observe that odd and even numbers occur alternatively.

Complete the patterns :

i) 21, 22, 23, ____, ____, ____, ____, ____
Answer:
21, 22, 23, 24, 25, 26, 27, 28

ii) 1, 3, 5, ____, ____, ____, ____, ____
Answer:
1, 3, 5, 7, 9, 11, 13, 15

iii) 2, 4, 6, ____, ____, ____, ____, ____
Answer:
2, 4, 6, 8, 10, 12, 14, 16

iv) 85, 86, 87, 88, ____, ____, ____, ____, ____
Answer:
85, 86, 87, 88, 89, 90, 91, 92, 93

v) 39, 41, 43, ____, ____, ____, ____, ____
Answer:
39, 41, 43, 45, 47, 49, 51, 53

Let’s explore patterns while adding and subtracting odd and even numbers.

Add the following numbers:

(i)

Answer:

(ii)

Answer:

(iii)

Answer:

(iv)

Answer:

(v)

Answer:

(vi)

Answer:

Thus, we observe that addition of odd and even numbers involve a pattern.

Lets tabulate the patterns observed.

Answer:

Subtract the following numbers:

(i)

Answer:

(ii)

Answer:

(iii)

Answer:

(iv)

Answer:

(v)

Answer:

(vi)

Answer:

Let’s tabulate the patterns observed.

Answer:

Exercise (Text Book Page No. 22):

Question 1.
Make the patterns by multiplying with 10.

i) 1, 3, 5, 7, ____, ____, ____, ____
Answer:
10, 30, 50, 70

ii) 2, 4, 6, 8, ____, ____, ____, ____
Answer:
20, 40, 60, 80

iii) 1, 3, 7, 13, ____, ____, ____, ____
Answer:
10, 30, 70, 130

iv) 3, 5, 9, 15, ____, ____, ____, ____
Answer:
30, 50, 90, 150

Question 2.
Make the patterns by dividing with 10.

i) 110, 120, 130, ____, ____, ____, ____
Answer:
11, 12, 13

ii) 210, 230, 250, ____, ____, ____, ____
Answer:
21, 23, 25

iii) 470, 430, 410, ____, ____, ____, ____
Answer:
47, 43, 41

iv) 540, 470, 350, ____, ____, ____, ____
Answer:
54, 47, 35

v) 500, 210, 520, ____, ____, ____, ____
Answer:
50, 21, 52

Question 3.
Find the rule and complete the following pattern.

Answer:

3rd Standard Maths Guide Patterns Additional Questions and Answers

I. Complete the patterns.

(i) 31, 32, 33, ____, ____, ____, ____, ____
Answer:
31, 32, 33, 34, 35, 36, 37, 38

(ii) 7, 9, 11, ____, ____, ____, ____, ____
Answer:
7, 9, 11, 13, 15, 17, 19, 21

(iii) 12, 14, 16, ____, ____, ____, ____, ____
Answer:
12, 14, 16, 18, 20, 22, 24, 26.

3rd Standard Maths Guide Numbers Additional Questions and Answers

II. Make the patterns by multiplying with 10.

(i) 9, 11, 13, 15, ____, ____, ____, ____, ____
Answer:
90, 110, 130, 150, 170, ….

(ii) 10, 12, 14, 16, ____, ____, ____, ____, ____
Answer:
100, 120, 140, 160, 180,….

3rd Standard Maths Guide Numbers Additional Questions and Answers

III. Make the patterns by dividing with 10.

(i) 660, 640, 620, ____, ____, ____, ____, ____
Answer:
66, 64, 62, 60, …

(ii) 320, 350, 380, ____, ____, ____, ____, ____
Answer:
32, 35, 38, 40, ..

3rd Standard Maths Guide Numbers Additional Questions and Answers

IV. Add the following numbers.

(i) 942 + 413
Answer:

(ii) 667 + 764
Answer:

3rd Standard Maths Guide Numbers Additional Questions and Answers

V. Subtract the following numbers.

(i) 644 – 432
Answer:

(ii) 739 – 527
Answer:

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 2 Chapter 1 Numbers

Complete the following table. (Text Book Page No. 2):

Ans:

Repeated adddition.

ii) Find the total number of leaves.

Ans:
4 + 4 + 4 + 4 + 4 = 16
4 × 4 = 16

iii) How many apples are there in four plates.

Ans:
There are four plates. Each has five apples.
Total number of apples = 5 + 5 + 5 + 5 = 20 ⇒ 5 × 4 = 20

Activity (Text Book Page No. 5):

Ans:

Exercise (Text Book Page No. 5):

Ans:

Activity (Text Book Page No. 7):

Shall we say the multiples of 3.

Ans:

Multiples of 3 = 3, 6, 9, 12, 15, 18.

Exercise (Text Book Page No. 7):

Question 1.
Fill in the following tables:

Ans:

Question 2.
Fill in the boxes.

a. 6 × 3 =
Ans:
18

b. 5 × 3 =
Ans:
15

c. 3 × 3 =
Ans:
9

d. × 3 = 9
Ans:
3

e. 10 × 3 =
Ans:
30

f. 3 × 6 =
Ans:
18

g. 8 × 3 =
Ans:
24

h. 2 × = 6
Ans:
3

i. 4 × 3 =
Ans:
12

j. 3 × 10 =
Ans:
30

k. 3 × 4 =
Ans:
12

l. 9 × 3 =
Ans:
27

Exercise (Text Book Page No. 9):

Question 1.
Complete the table.

Ans:

Question 2.

If there are 4 toys in a box, how many toys will be there in 5 boxes?
Ans:
4 × 5 = 20

Question 3.
Fill in the boxes.

a. 3 × = 12
Ans:
4

b. 5 × 4 =
Ans:
20

c. × 4 = 28
Ans:
7

d. 9 × 4 =
Ans:
36

e. 6 × = 24
Ans:
4

f. × 3 = 12
Ans:
4

g. 4 × = 12
Ans:
3

h. × 4 = 40
Ans:
10

Exercise (Text Book Page No. 11):

Question 1.
Fill in the blanks.

a. ___ × 5 = 10
Ans:
2

b. 4 × ___ = 20
Ans:
5

c. 6 × 5 = ___
Ans:
30

d. 9 × ___ = 45
Ans:
5

e. ___ × 5 = 50
Ans:
10

Question 2.

If there are 6 roses in a vase, how many roses will be there in 6 vases?

× =

Ans:
6 × 6 = 36

Exercise (Text Book Page No. 13):

Complete the following table.

Ans:

Exercise (Text Book Page No. 13):

Question 1.
Multiply the following numbers by regrouping.

(i) 75 × 8
Ans:
75 × 8 = (70 + 5) × 8
= 560 + 40 = 600

(ii) 26 × 5
Ans:
26 × 5 = (20 + 6) × 5
= 100 + 30 = 130

(iii) 372 × 6
Ans:
372 × 6 = (300 + 70 + 2) × 6
= 1800 + 420 + 12
= 2232

(iv) 402 × 7
Ans:
402 × 7 = (400 + 2) × 7
= 2800 + 14
= 2814

(v) 752 × 3
Ans:
752 × 3 = (700 + 50 + 2) × 3
= 2100 + 150 + 6
= 2256

Exercise (Text Book Page No. 16):

Question 1.
Find the product using standard algorithm.

(i) 20 × 2 = ___
Ans:
40

(ii) 21 × 4 = ___
Ans:
84

(iii) 65 × 5 = ___
Ans:
325

(iv) 14 × 3 = ___
Ans:
42

(v) 26 × 10 = ___
Ans:
260

Question 2.
Complete the following table.

i) If the cost of one pen is ₹ 5, what will be the cost of 8 pens?
Ans:
8 × 5 = 40

ii) If there are 7 balls in a bag, how many balls will be there in 4 bags?
4 × 7 = ___
Ans:
4 × 7 = 28

iii) If the cost of one book is ₹ 10, what will be the cost of 7 books?
___ × 10 = ___
Ans:
10 × 7 = 70

iv) If there are 6 buttons in a shirt, how many buttons will be there in 3 shirts?
___ × + ___ = ___
Ans:
6 × 3 = 18

Question 3.
Find the product of the following numbers using lattice multiplication.

i) 22 × 25
Ans:

22 × 25 = 550

ii) 34 × 51
Ans:

34 × 51 = 1734

iii) 45 × 24
Ans:

45 × 24 = 1080

Exercise (Text Book Page No. 18):

Question 1.
If there are 4 toys in a box. How many toys will be there in 9 boxes?

Ans:
Number of Boxes = 9
Number of toys in each box = 4
Total number of toys = 9 × 4 = 36

Question 2.
If there are 3 colour pencils in a packet. How many pencils will be there in 9 packets.

Ans:
Number of packets = 9
Number of colour pencils in each packet = 3
Total number of colour pencils = 9 × 3 = 27

Question 3.
Write the multiplication fact for the following products

Ans:

3rd Standard Maths Guide Numbers Additional Questions and Answers

I. Fill in the boxes.

(i) 2 × 7 =
Ans:
14

(ii) 6 × 2 =
Ans:
12

(iii) × 2 = 20
Ans:
10

(iv) 2 × 9 =
Ans:
18

(v) 2 × 5 =
Ans:
10

(vi) 2 × 4 =
Ans:
8

(vii) 3 × 8 =
Ans:
24

(viii) 6 × 3 =
Ans:
18

(ix) 7 × = 21
Ans:
3

(x) 10 × 4 =
Ans:
40

(xi) 3 × 4 =
Ans:
12

(xii) 4 × = 20
Ans:
5

(xiii) 6 × = 30
Ans:
5

(xiv) 7 × 5 =
Ans:
35

(xv) 2 × = 20
Ans:
10

II. Multiply the following numbers by regrouping.

(i) 57 × 8
Ans:
57 × 8 = (50 + 7) × 8
= 400 + 56
= 456

(ii) 65 × 7
Ans:
65 × 7 = (60 + 5) × 7
= 420 + 35
= 455

(iii) 841 × 4
Ans:
841 × 4 = (800 + 40 + 1) × 4
= 3200 + 160 + 4
= 3364

III. Find the product using standard algorithm.

(i) 32 × 5
Ans:

32 × 5 = 160

(ii) 17 × 4
Ans:

17 × 4 = 68

(iii) 46 × 3
Ans:

46 × 3 = 138

IV. Find the product of the following numbers using lattice multiplication.

(i) 33 × 45
Ans:

33 × 45 = 1485

(ii) 47 × 22
Ans:

47 × 22 = 1034

(iii) 56 × 61
Ans:

56 × 61 = 3416

V. Story Problem.

Question 1.
If there are 5 chocolate in a box. How many chocolates will be there in 8 boxes?
Ans:
Number of boxes = 8
Number of chocolates in each box = 5
∴ Total number of chocolates = 8 × 5 = 40

Question 2.
If the cost of one pen is ₹ 6, what will be the cost of 3 pens?
Answer:
Number of pens = 3
Cost of one pen = ₹ 6
Total cost of 3 pens = 3 × 6 = ₹ 18

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 1 Chapter 6 Information Processing

Activity 1 (Text Book Page No. 57):

Let us colour the blocks.

Find all possible ways of colouring the given blocks with blue and red. One is done for you.

Answer:

Activity 2 (Text Book Page No. 57):

Fill the white space in the given blocks with alternate colours and answer the following questions based on it.

Answer:

Question 1.
Total number of blocks
Answer:
10

Question 2.
Number of rose block
Answer:
4

Question 3.
Number of blocks
Answer:
6

Question 4.
Number of blocks in 2 and 4 row
Answer:
1 & 2

Question 5.
How many more than
Answer:
2

Practice (Text Book Page No. 58):
Question 3.
List down all possible ways of forming three digit numbers by using the given digits only once.

a. 9, 6, 8

Answer:

b. 3, 2, 0

Answer:

c. 1, 5, 4

Answer:

Question 4.
Find all possible ways of combining the three letters a, e, tusing each of them once.

Answer:

Practice (Text Book Page No. 60):

Question 1.
Collect the data from 40 of your friends about their favourite food and represent it in Picture.

Answer:

Question 2.
The following picture represents the number of chocolates sold at a shop in a week.

Answer the following questions from the data given in the above table.

Question 1.
The total number of chocolates sold on Thursday is
Answer:
40

Question 2.
The sale was maximum on
Answer:
Monday

Question 3.
The sale was minimum on
Answer:
Saturday

Question 4.
Sale were equal on and
Answer:
Tuesday, Friday

Question 5.
The total number of Chocolates sold in six days are
Answer:
180

Question 3.
Collect the data from 40 of your friends about their mode of travel to school and represent it in the picture.

Answer:
Activity to be done by the students themselves.

Draw a conclusion from the representation by discussing with your teacher.

The graph below shows the number of children in a school studying in classes 1-4 of a school. The number of girls studying in classes 1-4 of a school are 14 10, 16 and 13 respectively. braw the graph discussing with your teacher for number of boys studying in classes 1-4.

Answer:

After completing the pictorial representation answer the following questions.

i. The number of girls in class 2 is ___________.
Answer:
10

ii. The number of boys in class 3 is ___________.
Answer:
15

iii. The total number of students in class 4 is ___________.
Answer:
29

iv. The total number of girls from class 1 to 4 is ___________.
Answer:
53

v. The total number of boys from class 1 to 4 is ___________.
Answer:
59

vi. The class which has more strength is ___________.
Answer:
3rd Standard.

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 1 Chapter 5 Time

Let us recall the months of the year. (Text Book Page No. 51):

a. Join the dots in the order of the days and colour the picture.

Answer:

b. Join the dots in the order of the months and colour the picture.

Answer:

c. Fill in the blanks.

Question 1.
A year has _____ days.
Answer:
365

Question 2.
There are _____ days in a week.
Answer:
7

Question 3.
_____ months are in 1 year.
Answer:
12

Question 4.
A month has _____ days.
Answer:
30

Question 5.
The first month of a year is _____.
Answer:
January

Question 6.
The first day of a week is _____.
Answer:
Sunday

Try this (Text Book Page No. 52):

Circle the date given below in the following calendar.

1. Round the date 4 January 2018 ?
2. Round the date 15 January 2018 ?
3. Round the date 22 February 2018 ?
4. Round the date 31 January 2018 ?
5. Round the date 28 February 2018?
6. Round the date 5/02/2018 ?
7. Round the date 26/01/2018 ?
8. Round the Sunday date in January 2018 ?
Answer:

Practice (Text Book Page No. 53):

Question 1.
Look at the calendar of 2018 and fill in the boxes.

Question 1.
Teachers Day is on ________
Answer:
5 September (Wednesday)

Question 2.
Independence Day is on ________
Answer:
15 August (Wednesday)

Question 3.
Republic Day is on ________
Answer:
26 January (Friday)

Question 4.
Children’s Day is on ________
Answer:
14 November (Wednesday)

Question 2.
Match the following.

Answer:

Question 3.

Look at the above calendar and fill in the blanks.

Question 1.
Number of days in October 2018 is _____
Answer:
31

Question 2.
The number of Sundays _____
Answer:
4

Question 3.
The first Saturday is on 6 _____
Answer:
6

Question 4.
Last day of the month is Wednesday _____
Answer:
Wednesday

Question 5.
The tenth day of this month is Wednesday _____
Answer:
Wednesday

Question 6.
The third Wednesday comes on _____
Answer:
17

Practice (Text Book Page No. 54):

Question 1.
Write the manufacture date and expiry date of the following items.

Answer:

Question 2.
Calculate how many months / days between manufacture and expiry dates.

Answer:

Activity 2 (Text Book Page No. 55):

Fill in the date of manufacture and date of expiry of food products you use in daily life.

Answer:
Activity to be done by the students themselves.

Practice (Text Book Page No. 56):

Question 1.
Find how many days are there in first 5 months of the leap year.
Answer:
152 days

Question 2.
Find the next five leap years.
Answer:
2024, 2028, 2032, 2036, 2040.

Question 3.
Circle the ordinary years and box the leap years.
Answer:

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 1 Chapter 4 Measurements

Activity 1 (Text Book Page No. 45):

Tabulate the length of your class table measured by five of your friends with non-standard units.

Answer:
Activity to be done by the students themselves.

Activity 2 (Text Book Page No. 45):

Measure the length of ribbon by your hand span.

Friend 1 ___________ hand span
Friend 2 ___________ hand span
Friend 3 ___________ hand span
Friend 4 ___________ hand span
Answer:
Activity to be done by the students themselves.

Activity 3 (Text Book Page No. 45):

Students are divided into two groups. One group should measure the length of the class room in non standard units and the other group in standard units.
Answer:
Activity to be done by the students themselves.

Activity 4 (Text Book Page No. 45):

Group of five students measure the length of the black board by given objects.

Activity 5 (Text Book Page No. 47):

Measure the length of ribbon by tape roll.

Raj centimeter
Kavi centimeter
Anu centimeter
Kavi centimeter

Measurements measured using standard units do not change from person to person.
Answer:
Activity to be done by the students themselves.

Practice (Text Book Page No. 47):

Question 1.
Measure the length of following things by centimetre scale and write it in the table below.

Answer:
Activity to be done by the students themselves.

Question 2.
Measure length of the things by using ruler.

Measure the length of the following things in your house using a scale.

Answer:
Activity to be done by the students themselves.

Try this (Text Book Page No. 48):

a. Write metre or centimetre in the blank space.

i. My pencil is 6 _____ long.
Answer:
cm

ii. My hairpin is _____ long.
Answer:
mm

iii. This tree is 3 _____ high.
Answer:
m

iv. Height of coconut tree is 15 _____.
Answer:
m

b. Meena has a ribbon of 50 cm and Reena has a ribbon of 110 cm. Whose ribbon is the longer?
Answer:
Meena’s Ribbon = 50 cm
Reena’s Ribbon = 110 cm
∴ Reena’s Ribbon is longer.

Activity 6 (Text Book Page No. 48):

Measure the length of following things in your class room using metre tape and fill in the boxes.

Answer:
Activity to be done by students.

Try this (Text Book Page No. 48):

a. Centimeter _____ Meter
Answer:
<

b. Meter _____ Kilometer
Answer:
<

c. Kilometer _____ Centimeter
Answer:
>

Practice (Text Book Page No. 49):

Match the objects with the appropriate units of measuring their length.

Answer:

Activity 7 (Text Book Page No. 49):

Estimate the length of the following objects and verify with actual length.

Answer:
Activity to be done by students.

Practice (Text Book Page No. 50):

Question 1.
Circle the odd one.
1. mm
2. cm
3. m
4. cubit
Answer:
4. cubit

Question 2.
Fill in the blanks.

a. 1 meter = _____ cms
Answer:
100

b. 2 meter = _____ cms
Answer:
200

c. 3 meter = _____ cms
Answer:
300

d. 4 meter = _____ cms
Answer:
400

Question 3.
Match the following.

Answer:

Question 4.
Write all the non-standard units.
Answer:

1. Finger span
2. Hand span
3. Cubit
4. Pace
5. Foot span

Question 5.
Write all the standard units you know.
Answer:

1. Millimeter
2. Centimeter
3. Meter
4. Kilometer

Question 6.
Write in short form,

a. millimeter : _____
Answer:
mm

b. meter : _____
Answer:
m

Question 7.
Write the given units in order.
Ascending order: _____, _____, _____, _____
Descending order: _____, _____, _____, _____

Answer:
Ascending order: mm, cm, m, km
Descending order: km, m, cm, mm.

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 1 Chapter 3 Patterns

Practice (Text Book Page No. 36):

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Question 4.

Answer:

b. Continue the growing pattern.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Practice (Text Book Page No. 37):

Continue the repeating patterns upto 3 steps in the space Provided.

Activity 3 (Text Book Page No. 37):

Answer:

Activity 4 (Text Book Page No. 38):

Question 1.
Match the following and complete the pattern.

Answer:

Question 2.
Match the following.

Answer:

Practice (Text Book Page No. 39):

Continue the Straight – line patterns.

Activity 5 (Text Book Page No. 42):

Complete the symmetrical image.

Question 1.

Answer:

Question 2.

Answer:

Activity 6 (Text Book Page No. 43):

a. Draw the lines of symmetry for the following figures.

Answer:

b. Circle the non – symmetrical shapes.

Answer:

Activity 7 (Text Book Page No. 43):

Draw the other half from the line of symmetry to make it symmetrical.

Question 1.

Answer:

Activity 8 (Text Book Page No. 43):

Line symmetry is also found in some letters of the alphabet. Complete Write the letters with line symmetry.
Answer:
1 symmetry (vertical) – A, H, I, M, O, T, U, V, W, X, Y
1 symmetry (Horizontal) – B, C, D, E, H, I, K, O, X
2 symmetry (Horizontal and vertical) – H, I, O, X
No symmetry – F, G, J, L, N, N, P, P, Q, R, S, Z

Samacheer Kalvi 3rd Standard Maths Guide

Samacheer Kalvi 3rd Standard Maths Book Solutions Term 1 Chapter 2 Numbers

Question 1.

Look at the picture and answer the following. Flowers number and number name of the flowers. (Text Book Page No. 17):

Answer:

Question 2.
Fill in the blanks in each of the figures with missing numbers (Text Book Page No. 18):

a.

Answer:

b.

Answer:

c.

Answer:

Question 3.
Complete the given facts by placing + for addition and – for subtraction. (Text Book Page No. 18)

a. 9 _ 3 = 12
Answer:
+

b. 80 _ 11 = 91
Answer:
+

c. 56 _ 21 = 35
Answer:
–

d. 92 _ 20 = 72
Answer:
–

e. 12 _ 3 = 9
Answer:
–

f. 75 _ 17 = 92
Answer:
+

Activity 1:
Read and write all three digit numbers and number names (Text Book Page No. 11):

Answer:

Read and write the numbers from 101 to 200 (Text Book Page No. 12):

Answer:

Activity 2:

Write the numerals for the given number names (Text Book Page No. 13):

Question 1.
Five hundred and thirty five.
Answer:
535

Question 2.
One hundred and seven
Answer:
107

Question 3.
one hundred and twenty eight.
Answer:
128

Question 4.
Six hundred.
Answer:
600

Question 5.
Nine hundred and five.
Answer:
905

Activity 3:

Write the number names for the following Numerals (Text Book Page No. 13):

Question 1.
150
Answer:
One hundred and fifty.

Question 2.
225
Answer:
Two hundred and twenty five

Question 3.
306
Answer:
Three hundred and six.

Question 4.
535
Answer:
Five hundred and thirty five.

Question 5.
907
Answer:
Nine hundred and seven

Question 6.
992
Answer:
Nine hundred and ninety two.

Activity 4:

Form three digit numbers using each of the given numbers only once.

Question 1.

Answer:

Question 2.

Answer:

Place value of a numeral in the given number.
write the place value of the underlined digit in the given number.

Answer:

Find the numbers represented in the abacus by writing their place value.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Expand the given numbers into ones tens and hundreds.

Question 1.
246
Answer:
200 + 40 + 6

Question 2.
570
Answer:
500 + 70 + 0

Question 3.
637
Answer:
600 + 30 + 7

Question 4.
603
Answer:
600 + 0 + 3

Question 5.
989
Answer:
900 + 80 + 9

Write the simplified form of the number of the given expansions.

Question 1.
300 + 90 + 8
Answer:
398

Question 2.
200 + 50 + 6
Answer:
256

Question 3.
900 + 80 + 5
Answer:
985

Question 4.
500 + 50 + 7
Answer:
557

Complete the following by skip counting in 5s ,10s and 100s.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Activity 5 (Text Book Page No. 15):

Answer:

Activity 6 (Text Book Page No. 16):

Colour the balloons with odd number by yellow and even number by red.

In number sequence, after every odd number there is an even number. Similarly after every even number there is an odd number.

Try this (Text Book Page No. 19):

Put <, > and = in the boxes provided.

Question 1.
103 ___ 438
Answer:
<

Question 2.
250 ___ 069
Answer:
>

Question 3.
408 ___ 308
Answer:
>

Question 4.
710 ___ 710
Answer:
=

Question 5.
614 ___ 618
Answer:
<

Question 6.
719 ___ 917
Answer:
<

• The greatest three digit number is 999.
• The smallest three digit number is 100.

Try this (Text Book Page No. 20):

Question 1.
Write the even numbers between 245 and 255 in descending order.
Answer:
254, 252, 250, 248, 246.

Try this (Text Book Page No. 20):

Question 1.
Arrange the following numbers in ascending order.

a. 55, 63, 40, 8
Answer:
8, 40, 55, 63

b. 50, 405, 109, 600
Answer:
50, 109, 405, 600

c. 217, 201, 215, 219
Answer:
201, 215, 217, 219

d. 785, 757, 718, 781
Answer:
718, 757, 781, 785.

Question 2.
Arrange the following numbers in descending order.

a. 212, 503, 369, 60
Answer:
503, 369, 212, 60

b. 323, 303, 332, 33
Answer:
332, 323, 303, 33

c. 051, 100, 810, 167
Answer:
810, 167, 100, 051

d. 205, 210, 290, 300
Answer:
300, 290, 210, 205

Practice (Text Book Page No. 21):

Question 1.
Form greatest and smallest numbers using the given digits (without repetition of digits)

Answer:
a. 5, 0, 9
Answer:
Greatest number = 950
Smallest number = 509

b. 6, 3, 7
Answer:
Greatest number = 763
Smallest number = 367

c. 4, 0, 1
Answer:
Greatest number = 410
Smallest number = 104

d. 9, 9, 0
Answer:
Greatest number = 990
Smallest number = 909

2. Complete the following number sequence.

Question 1.
111, 222, 333, 444, ___, ___, ___
Answer:
111, 222, 333, 444, 555, 666

Question 2.
150, 155, 160, 165, ___, ___, ___
Answer:
150, 155, 160, 165, 170, 175, 180

Question 3.
210, 310, 410, 510, ___, ___, ___
Answer:
210, 310, 410, 510, 610, 710, 810

Question 4.
333, 433, 533, 633, ___, ___, ___
Answer:
333, 433, 533, 633, 733, 833, 933

Question 3.
Find the numbers.

a. 4 Hundreds; 5 Tens; 0 ones
Answer:
450

b. 3 Hundreds; 0 Tens; 1 Ones
Answer:
301

c. 5 Hundreds; 8 Tens; 9 Ones
Answer:
589

d. 8 Hundreds; 0 Tens; 5 Ones
Answer:
805

Question 4.
Write the number names.

a. 156
Answer:
One hundred fifty six.

b. 340
Answer:
Three hundred and forty.

c. 408
Answer:
Four hundred and eight

d. 696
Answer:
Six hundred ninety six

Question 5.
Fill in the blanks.

a. 405 has ___ Hundred ___ Tens ___ Ones
Answer:
405 has 4 Hundred 0 Tens 5 Ones

b. 547 has ___ Hundred ___ Tens ___ Ones
Answer:
547 has 5 Hundred 4 Tens 7 Ones

c. 680 has ___ Hundred ___ Tens ___ Ones
Answer:
680 has 6 Hundred 8 Tens 0 Ones.

Question 6.
Write the place value for the bubbled digits.

a.
Answer:
Hundreds

b.
Answer:
Ones

c.
Answer:
Tens

Question 7.
Write down the odd and even numbers seperately.

a. Odd numbers
Answer:
123, 333, 535

b. Even numbers
Answer:
422, 588, 246

Question 8.
Write <, > and = in the box.

a. 105 ___ 150
Answer:
<

b. 419 ___ 547
Answer:
<

c. 394 ___ 387
Answer:
>

d. 761 ___ 683
Answer:
>

e. 660 ___ 660
Answer:
=

f. 983 ___ 990
Answer:
<

Question 9.
Write the numbers in ascending and descending order.

a. Ascending order:
Answer:
301, 308, 323, 326, 340, 356, 365, 399

b. Descending order:
Answer:
399, 365, 356, 340, 326, 323, 308, 301

Question 10.
Using the digits 6, 8 and 5 only once write the greatest and smallest 3 digit number.
Answer:
Greatest number: 865
Smallest number: 568

Addition:

Answer:

Try this (Text Book Page No. 24):

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Question 4.
34 + 452 + 3 = _____
Answer:
489

Try this (Text Book Page No. 25):

Add the following numbers.

a.

Answer:

b.

Answer:

c.

Answer:

d. 921 + 20 + 61 = ___
Answer:
1002

e. 28 + 195 + 6 = ___
Answer:
229

Try this (Text Book Page No. 26):

Subtraction:

Answer:

Try this (Text Book Page No. 27):

Subtract the following numbers.

a.

Answer:

b.

Answer:

c.

Answer:

Try this (Text Book Page No. 28):

a.

Answer:

b.

Answer:

c.

Answer:

Daily life situation involving addition and subtraction.

Question 1.

452 Mangoes are grown in farm A and 349 in farm B. Find the total number of mangoes grown in both farms.
Mangoes in farm A = 452
Mangoes in farm B = 349

Total number of mangoes = 801

Question 2.
Amuthan saved rupees 125 on the first day and rupees 200 in the second day. Find the total amount saved by him in two days.

Answer:
The first day saving = 125
The second day saving = 200

Total saving = 325

Question 3.
Kumar earned rupees 800 ¡n a day and spent rupees 450. Find the amount saved by him.
Answer:
His one day income = 800
Amount spent = 450

Savings amount = 350

Try this (Text Book Page No. 30):

Question 1.
There were 10 egg trays each with 10 eggs in Volavans egg shop. He sold eggs ¡n 3 trays and found that eggs in 2 trays were roften. Find the number of eggs reamining in valavan’s shop.

Answer:
Total number of eggs in valavans shop = 100
Number of eggs sold + number of eggs rotten = 30 + 20 = 50
Number of eggs remaining in the shop = 50.

Question 2.
Frame questions for addition and subtraction for the picture below.

One is done for you.
1. Rani Chose 2 shirts from the hanger and 3 shirts from the rack Find the total number of shirts chosen by him.
Answer:
2. Revathi chose 8 chudithars. but her mother paid only for chudithars. How many chudithars Revathi left in the shop?

Practice (Text Book Page No. 31):

Frame questions for the given addition and subtraction facts.

Answer:

Practice (Text Book Page No. 33):

Question 1.
Find the sum and difference of the following.

a.

Answer:

b.

Answer:

c.

Answer:

d.

Answer:

e.

Answer:

f.

Answer:

Question 2.
Round off to the nearest 10.

a. 19
Answer:
19 ≈ 20

b. 25
Answer:
25 ≈ 30

c. 21
Answer:
21 ≈ 20

d. 47
Answer:
47 ≈ 50

Question 3.
Estimate the sum to the nearest ten and also find the actual sum.

a.

Answer:

b.

Answer:

Question 4.
Estimate the difference to the nearest ten and also find the actual difference.

a.

Answer:

b.

Answer:

Samacheer Kalvi 3rd Standard Maths Guide