Page 30 - 新思维数学活动用书6 样章

2.3 Common multiples and factors

2.3 Common multiples and factors

Worked example 3

Write these numbers in the correct common factor common multiple
place on the Venn diagram. factor multiple

1 2 3 4 5 6 7

Factors of Factors of
20 24

What is special about the numbers in the shaded area?

Tip
1, 2 and 4
Factors of are common Factors of Make sure you include
20 are: factors of 20 24 are:
1, 2, 4, 5. and 24. 1, 2, 3, 4, 6. every number in the

diagram. You could tick
each number as you place it.

Factors of Factors of 7 is not a
20 1 24 factor of
5 2 3 either 20
or 24.

4 6

7

The numbers in the shaded area are common factors of 20 and 24.

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