Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   31

 
 
 
 
 
 
1 b.   64

 
 
 
 
 
 
2 a.   64

 
 
 
 
 
 
2 b.   25

 
 
 
 
 
 
3 a.   18

 
 
 
 
 
 
3 b.   89

 
 
 
 
 
 
4 a.   20

 
 
 
 
 
 
4 b.   11

 
 
 
 
 
 
Page 2

Answer Key

1 c.  prime
1 c.  26
2 a.  26
2 a.  52
3 a.  2 × 32
3 b.  prime
4 b.  22 × 5
4 b.  prime


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