Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   19

 
 
 
 
 
 
1 b.   161

 
 
 
 
 
 
2 a.   250

 
 
 
 
 
 
2 b.   255

 
 
 
 
 
 
3 a.   21

 
 
 
 
 
 
3 b.   382

 
 
 
 
 
 
4 a.   255

 
 
 
 
 
 
4 b.   212

 
 
 
 
 
 
Page 2

Answer Key

1 c.  prime
1 c.  7 × 23
2 b.  2 × 53
2 b.  3 × 5 × 17
3 c.  3 × 7
3 b.  2 × 191
4 b.  3 × 5 × 17
4 c.  22 × 53


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