Every Number Has Exactly One Prime Factorization Worksheet with Answer Key

What's on the worksheet

1. Rewrite each product as a prime factorization in tidy form.
   3 · 2 · 5 · 27 · 2 · 7 · 3 · 2 · 29 · 2 · 54 · 6 · 1115 · 21
2. Make a table of all the factors of 88 from its prime factorization.
3. Find the largest odd factor, and the largest factor that is even but not a multiple of 4.
4. Count the zeros at the end of a product without multiplying it out.
5. Find the smallest multiplier that makes 34 · 45 · 91 divisible by 98, and by 100.
6. Explain why 91 is not a product of three numbers greater than 1.
7. Compare the lists of powers of 6, 36 and 4 from Zoe, Ben and Jin.