WorksheetsGCF and LCM Review
Total questions: 13
Worksheet time: 19mins
Name
Class
Date
1.
Find the GCF of 12 and 30
a)
12
b)
2
c)
5
d)
6
2.
Find the GCF of 15 and 45
a)
3
b)
5
c)
15
d)
30
3.
Find the GCF of 25 and 40
a)
5
b)
8
c)
2
d)
10
4.
Find the LCM of 14 and 21
a)
28
b)
42
c)
7
d)
294
5.
Find the LCM of 3 and 8
a)
3
b)
16
c)
24
d)
72
6.
Find the LCM of 9 and 12
a)
3
b)
18
c)
36
d)
72
7.
Composite numbers:
a)
Are always bigger than prime numbers
b)
Have more than 2 factors
c)
Have 2 pairs of factors
d)
Don't have factors
8.
Prime numbers have:
a)
Exactly 2 factors
b)
2 pairs of factors
c)
More than 2 factors
d)
1 factor
9.
One is
a)
prime
b)
composite
c)
not prime or composite
d)
the loneliest number that you'll ever do
10.
Is 5 prime or composite?
a)
Prime
b)
Composite
11.
11(2+5)
a)
22+55
b)
11+22
c)
3+6
d)
11+2+5
12.
Use the distributive property to evaluate
4(2+3)
4(2+3)
a)
4(2+3)
4*2+4*3
8+12
4*2+4*3
8+12
b)
4(2+3)
4*2+3
8+3
4*2+3
8+3
c)
4(2+3)
2+4*3
2+12
2+4*3
2+12
d)
4(2+3)
4+2*4+3
6*7
4+2*4+3
6*7
13.
multiples for the number 3 include..
a)
4,8,12,16,18,21
b)
3,5,7,9,10,12
c)
3,4,5,6,7,8
d)
3,6,9,12,15,18
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