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):
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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 =
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15
c. 3 × 3 =
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9
d. × 3 = 9
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3
e. 10 × 3 =
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30
f. 3 × 6 =
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18
g. 8 × 3 =
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24
h. 2 × = 6
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3
i. 4 × 3 =
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12
j. 3 × 10 =
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30
k. 3 × 4 =
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12
l. 9 × 3 =
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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 =
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20
c. × 4 = 28
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7
d. 9 × 4 =
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36
e. 6 × = 24
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4
f. × 3 = 12
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4
g. 4 × = 12
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3
h. × 4 = 40
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10
Exercise (Text Book Page No. 11):
Question 1.
Fill in the blanks.
a. ___ × 5 = 10
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2
b. 4 × ___ = 20
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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
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75 × 8 = (70 + 5) × 8
= 560 + 40 = 600
(ii) 26 × 5
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26 × 5 = (20 + 6) × 5
= 100 + 30 = 130
(iii) 372 × 6
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372 × 6 = (300 + 70 + 2) × 6
= 1800 + 420 + 12
= 2232
(iv) 402 × 7
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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
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22 × 25 = 550
ii) 34 × 51
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34 × 51 = 1734
iii) 45 × 24
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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
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3rd Standard Maths Guide Numbers Additional Questions and Answers
I. Fill in the boxes.
(i) 2 × 7 =
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14
(ii) 6 × 2 =
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12
(iii) × 2 = 20
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10
(iv) 2 × 9 =
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18
(v) 2 × 5 =
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10
(vi) 2 × 4 =
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8
(vii) 3 × 8 =
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24
(viii) 6 × 3 =
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18
(ix) 7 × = 21
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3
(x) 10 × 4 =
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40
(xi) 3 × 4 =
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12
(xii) 4 × = 20
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5
(xiii) 6 × = 30
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5
(xiv) 7 × 5 =
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35
(xv) 2 × = 20
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10
II. Multiply the following numbers by regrouping.
(i) 57 × 8
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57 × 8 = (50 + 7) × 8
= 400 + 56
= 456
(ii) 65 × 7
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65 × 7 = (60 + 5) × 7
= 420 + 35
= 455
(iii) 841 × 4
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841 × 4 = (800 + 40 + 1) × 4
= 3200 + 160 + 4
= 3364
III. Find the product using standard algorithm.
(i) 32 × 5
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32 × 5 = 160
(ii) 17 × 4
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17 × 4 = 68
(iii) 46 × 3
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46 × 3 = 138
IV. Find the product of the following numbers using lattice multiplication.
(i) 33 × 45
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33 × 45 = 1485
(ii) 47 × 22
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47 × 22 = 1034
(iii) 56 × 61
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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