Prime Factorization Homework Sheet
Prime Factorization Homework Sheet Name
Academic Math 7 Period
Chapter Four Date
I. Use your divisibility rules and times table facts to determine whether each given
number is prime, composite, or neither.
Check the appropriate block for each given number.
If you check composite, you must also state a third factor other than
the given number and one that makes it composite for you.
|Problem |Given Number |Prime |Composite |Your Third Factor- If Composite |Neither |
| | | | | | |
|A |85 | | | | |
| | | | | | |
|B |423 | | | | |
| | | | | | |
|C |0 | | | | |
| | | | | | |
|D |536 | | | | |
| | | | | | |
|E |47 | | | | |
| | | | | | |
|F |333 | | | | |
| | | | | | |
|G |642 | | | | |
| | | | | | |
|H |39 | | | | |
| | | | | | |
|I |2,193 | | | | |
| | | | | | |
|J |11,444 | | | | |
II. Use a factor tree to determine the prime factorization in exponential form
starting with the smallest prime factor and ending with the largest prime
factor. Write your final answer in the blank provided. (the rectangle answer)
If the given number is a prime, write the given number in the blank provided.
78 144
560 96
III. Use repeated division (the ladder method) to determine the prime factorization in exponential form starting with the smallest prime factor
and ending with the largest prime factor.
Write your final answer in the blank provided. (the rectangle answer)
If the given number is a prime, write the given number in the blank provided.
420 126
924 175
IV. Find the missing prime factors: 22 ● 52 ● ____ ● ____ = 7700
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