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100-B3-2

2. Find the least common multiple of the two numbers.

Example

8, 20

Multiples of 8: , , , , , ...
, ...
Multiples of 20: , , , ,
The least common multiple of 8 and 20:

Common multiples of 8 and 20: , ,

a.
15, 25

Multiples of 15: , , , , , ...
Multiples of 25: , , , , , ...
The least common multiple of 15 and 25:

Common multiples of 15 and 25: , ,

b.
14, 21

Multiples of 14: , , , , , ...
Multiples of 21: , , , , , ...
The least common multiple of 14 and 21:

Common multiples of 14 and 21: , ,