Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   51

 
 
 
 
 
 
1 b.   49

 
 
 
 
 
 
2 a.   85

 
 
 
 
 
 
2 b.   98

 
 
 
 
 
 
3 a.   81

 
 
 
 
 
 
3 b.   42

 
 
 
 
 
 
4 a.   43

 
 
 
 
 
 
4 b.   100

 
 
 
 
 
 
Page 2

Answer Key

1 c.  3 × 17
1 b.  72
2 a.  5 × 17
2 b.  2 × 72
3 b.  34
3 a.  2 × 3 × 7
4 c.  prime
4 c.  22 × 52


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