LCM or GCF
The GCF of 15 and 21
3
What is the square root of 36? Show me how to correctly use the radical sign.
6
Write 42 in expanded form, then evaluate.
4 x 4 Value = 16
30 x 60 =
1,800
Round the factors to get an estimated answer and then solve:
1.98 x 13 =
Actual: 25.74
The LCM of 12 and 18
36
Prime, Composite, or Neither? 7
Prime
Write 3 x 3 x 3 in exponent form, then evaluate.
33 = 27
40 x 500 =
20,000
Use mental math to solve:
10 x 14.9 =
149
The GCF of 18 and 27
9
Prime, Composite, or Neither? 82
Composite
Write 2 x 2 x 2 x 2 in exponent form, then evaluate
24 = 16
80 x 800 =
64,000
Use mental math to solve:
1,000 x 3.78 =
3,780
The LCM of 8 and 10
40
Prime, Composite, or Neither? 1
Neither
Write 103 in expanded form, then evaluate
10 x 10 x 10 = 1,000
Use the distributive property to solve:
200 x 13
200 x (10 + 3) = 2,000 + 600 = 2,600
Round both factors to get an estimated answer and then solve:
749 x 254 =
Estimated: 210,000
Actual: 190,246
The GCF of 16 and 56
GCF = 8
Prime, Composite, or Neither? 63
Composite
Write 53 in expanded form, then evaluate
5 x 5 x 5 = 125
Use the distributive property to solve:
40 x 92 =
40 x (90 + 2) = 3,600 + 80 = 3,680
What is a prime number?
It has only two factors, one and itself.