Enter the number only. Do not include units like $, %, or ft²
Correct answer:
- Divide out the 2s: , , → three 2s
- Divide out the 3s: , → two 3s
- Write with exponents:

MA.6.NSO.3.4 · Number Sense and Operations
Students express composite whole numbers as a product of prime factors written with natural number exponents. For example, 72 is written as 2^3 × 3^2. They use tools like factor trees to break a number down completely into primes.
The FAST tests this with multiple choice items asking which expression is the correct prime factorization of a number and equation editor items where students build the factorization themselves.
These come straight from Algebro's question bank. Pick an answer to check it instantly.
Enter the number only. Do not include units like $, %, or ft²
Correct answer:
Correct answer: C. 20
Correct answer: C. 40
Correct answer: C. 216
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