Unit 2.3/3.1 Test Review

Unit 2.3/3.1 Test Review

Make sure to do all your work on your math journal. Try your very best!

Distributive Property

Multiply the coefficient by every term inside the parenthesis

Multiple Choice

Simplify the following expression:

10(8 − 2x)

• 80 − 20x

• 80 + 20x

• 18 −12x

• 18 + 12x

Multiple Choice

Which of the following is equivalent to 5(2x + 6)?

• 10x + 30
• 10x + 6
• 40x
• 2x + 30

Multiple Choice

3(3x +1)

• 9x +3
• 3x + 3
• 12x
• 9x + 1

Exponents

Exponents show repeated multiplication.

Multiple Choice

Which is equivalent to 4 x 4 x 4 x 4 x 4

• 4⁶
• 5⁴
• 4⁴
• 4⁵

Multiple Choice

Which is equivalent to 2⁴

• 8
• 20
• 16
• 12

Multiple Choice

Which is equivalent to 5 x 5 x 5 x 5

• 5³
• 5⁴
• 4⁵
• 5⁵

Multiple Choice

Which is equivalent to 3^{4 ?}

• 27
• 9
• 81
• 12

Multiple Choice

Write each product using an exponent. 
7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 

• 7⁷
• 7⁸
• 8⁷
• 7⁹

Prime Factorization

Make sure that all your factors must be prime.

Prime Numbers: 2,3,5,7,11,13

Multiple Choice

Find the prime factorization of 72

• 2³ x 3²

• 2 x 3² x 4

• 2⁴ x 3³

• 2² x 6²

Multiple Choice

Use a number tree to find the prime factorization of 42

• 4x4x3
• 6x7
• 7x3x2
• 5x4x2

Multiple Choice

What is the Prime Factorization of 144?

• 2⁴ x 3²

• 2² x 3⁴

• 2⁴ x 3⁴

• 2² x 3 x 3²

Multiple Choice

Find the prime factorization of 60

• 5 • 12

• 2 • 3² • 5

• 2² • 3 • 5

• 2⁷

Multiple Choice

Is 5 prime or composite? 

• Prime
• Composite

Order of Operations

Grouping Symbols () {} []

Exponents

Multiply/Divide from left to right

Add/Subtract from Left to right

Multiple Choice

27 ÷ 3 x 2 + 4²

• 34
• 20.5
• 26

Multiple Choice

• 1

• -1

• 171

• 38

Combining like terms

You need to group things that are alike.

Remember that you cannot combine variables and constants (numbers) together

Multiple Choice

Simplify:
2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

Multiple Choice

• 9x+6
• 3x+4
• 3x-4
• 6x+4

Multiple Choice

• 6x-1
• 10x+7
• 6x+1
• 8x+1

Multiple Choice

• 10x+16
• 12x+18
• 16x+18
• 15x+18

Multiple Choice

• 8y+5
• 3y+3
• 7y+5
• 7y+4