Basic Operations Exercises

Example 1

What are the prime factors of 120?

Hint

All numbers ending in 0 are divisible by 10. Hint, hint.

Example 2

What are the prime factors of 375?

Hint

All numbers ending in 5 and 0 are divisible by 5.

Example 3

What are the prime factors of 47?

Hint

Can you think of any number that 47 is divisible by?