Page 93 - ICSE Math 4

ACTIVITY

What To Do?

To fi nd the common multiples of 2, 3 and 4, and their L.C.M.

What We Need?

Green, red and yellow crayons, and a pencil
How To Do?
 Colour the boxes in the grid according to the given colour code.

Multiples of 2 Multiples of 3 Multiples of 4

1 2 3 4 5 6 7 8 9 10

20 19 18 17 16 15 14 13 12 11

21 22 23 24 25 26 27 28 29 30

40 39 38 37 36 35 34 33 32 31

41 42 43 44 45 46 47 48 49 50

60 59 58 57 56 55 54 53 52 51
61 62 63 64 65 66 67 68 69 70

80 79 78 77 76 75 74 73 72 71

81 82 83 84 85 86 87 88 89 90

100 99 98 97 96 95 94 93 92 91

 You will fi nd some boxes with 2 or 3 colours in the grid. This indicates the common

multiples of 2, 3 and 4.
 Common multiples of 2, 3, and 4

 Common multiples of 2 and 3

 Common multiples of 3 and 4

 Common multiples of 2 and 4

 Next, observe the given grid carefully and then complete the given table.

Common Multiples of L.C.M. of Given
Numbers
Given Numbers Numbers
2, 3, 4
2, 3
3, 4

2, 4

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