Question

Write 40 as a product of primes.
Use index notation when giving your answer.

Answer 1

This can easily be done with a factor tree.

40

/ \

2 20

/ \

2 10

/ \

2 5

40= 2³×5

Answer 2

2x2x2x5 or 2³x5

Explanation:

40

/ \

2 20

/ \

2 10

/ \

2 5