Page 78 - Maths Class 04

c. 3 and 5

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

2. In the table given below, circle the numbers that are multiples of 5 and

cross out the multiples of 7.

2 23 5 7 28 70 18 73 93 80 74 35 95

72 3 100 14 9 98 63 50 40 15 97 20 21

28 74 42 84 52 46 10 30 56 25 45 77 49

3. Fill in the 11th and 15th multiplies of the following numbers.

a. 13 b. 14

c. 11 d. 7

e. 1 f. 16

4. Find the first four common multiples of the following.

a. 2, 12 b. 4, 18 c. 3, 7

d. 6, 8 e. 2, 5 f. 3, 11

5. Fill in the blanks with the correct multiplies.
a. 9 × ______ = 27 b. 8 × ______ = 72

c. 5 × ______ = 25 d. 6 × ______ = 30

e. 2 × ______ = 10 f. 4 × ______ = 32

g. 4 × ______ = 12 h. 1 × ______ = 4

Least Common Multiples (LCM)

The Least Common Multiple (LCM) of two or more numbers is the smallest

number (not zero) that is a multiple of all the numbers.

Multiple of 3 :

0 , 3, 6, 9, 12 , 15, 18, 21, 24 .........

Multiple of 4 :

0 , 4, 8, 12 , 16, 20, 24 , 28.........

The LCM of 3 and 4 is 12.

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