Year 2 Lesson 11 In-class Exercise
Name ________________________
1). Find the prime factors of:
a).
21.
_____________
b).
40.
_____________
c).
60.
_____________
d).
720.
_____________
2). Find the Greatest Common Factors (GCF) (I'll help you with the first one):
a).
18 and 27
Factors of 18:
Factors of 27:
______________
b).
24 and 42
______________
c).
44 and 66
______________
d).
36 and 81
______________
e).
42 and 48
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