Question

3 the least common multiple of 4 and 5 is ______

Explanation:

Step1: List multiples of 4

Multiples of 4: $4, 8, 12, 16, 20, 24,...$

Step2: List multiples of 5

Multiples of 5: $5, 10, 15, 20, 25,...$

Step3: Identify smallest shared multiple

The smallest common multiple is 20.

Answer:

20