True / False
The following are factors of 10:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100...
False. Factors are smaller than the number. These are multiples of 10.
True / False
The following are factors of 20:
1, 2, 3, 4, 10, 20
True. Factors are equal to and smaller than the number.

2 x 3 x 7
What is the definition of a prime number?
A number with factors of only itself and 1.
What is the GCF of 36 and 54?
18
What is the LCM of 5 and 3?
15
What is the prime factorization of 56?
2 x 2 x 2 x 7
What is the definition of a composite number?
A number with more than one factor pair.
What is the GCF of 24 and 36?
12
Add the following fractions:
3/4 + 3/8
9/8 or 1 1/8
What is the prime factorization of 72?
2 x 2 x 2 x 3 x 3
Evaluate the expression: 4 (7 + 3)
28 + 12 = 40
Use the GCF and the distributive property to rewrite the following addition sentence: 70 + 50
10 (7+5)
Subtract the following fractions: 2/3 -3/6
1/6
What is the prime factorization of 108?
2 x 2 x 3 x 3 x 3
Use the distributive property to expand the following expression: 2 (2x + 3)
4x + 6
A math teacher combines his class with a science teacher for a group activity. The math teacher has 18 students and the science teacher has 27 students. The teachers want to form groups of the same size. Each group must have the same number of math students and the same number of science students. What is the greatest number of groups the teachers can form? Hint: Find the GCF.
9 groups
Boxes that are 12 inches tall are being piled next to boxes that are 10 inches tall. What is the least height in inches at which the two piles will be the same height? Hint: Find the LCM.
60 inches
What is the prime factorization of 144?
2 x 2 x 2 x 2 x 3 x 3
Use the distributive property to expand the following expression: 2 (3x + 5)=
6x + 10