Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   151

 
 
 
 
 
 
1 b.   123

 
 
 
 
 
 
2 a.   383

 
 
 
 
 
 
2 b.   380

 
 
 
 
 
 
3 a.   71

 
 
 
 
 
 
3 b.   419

 
 
 
 
 
 
4 a.   300

 
 
 
 
 
 
4 b.   353

 
 
 
 
 
 
Page 2

Answer Key

1 c.  prime
1 c.  3 × 41
2 b.  prime
2 b.  22 × 5 × 19
3 c.  prime
3 c.  prime
4 c.  22 × 3 × 52
4 c.  prime


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