Math Open Up Unit Review

Unit 1 Review

8th Grade Math

Lesson 1-1 Rational Numbers as Decimals

Multiple Choice

What is  $$0.\overline{7}$$  as a fraction or mixed number.

• 7/10

• 7/100

• 7/9

• 7/99

Multiple Choice

What is  $$0.\overline{23}$$  as a fraction or mixed number.

• 23/100

• $$2\frac{1}{\text{3}}$$  
  

• $$2\frac{3}{\text{9}}$$  

• 23/99

Multiple Choice

What is  $$4.\overline{45}$$  as a fraction or mixed number. Write your answer in SIMPLEST FORM.

• $$4\ \frac{\text{45}}{\text{99}}$$  

• $$4\frac{\text{5}}{\text{11}}$$  

• $$4\frac{\text{45}}{\text{100}}$$  
  

• $$4\frac{\text{5}}{\text{9}}$$  

Multiple Choice

What is  $$2.191919...$$  as a fraction or mixed number.

• $$2\frac{\text{19}}{\text{100}}$$  
  

• $$2\frac{\text{19}}{\text{99}}$$  

• 2/19

• $$2\frac{1}{\text{9}}$$  
  

Lesson 1-2 Understand Irrational Numbers

Multiple Choice

Is $$-0.\overline{25}$$  rational or irrational?

• Rational

• Irrational

Multiple Choice

Is $$-\sqrt{81}$$  rational or irrational?

• Rational

• Irrational

Multiple Choice

Is $$\sqrt{42}$$  rational or irrational?

• Rational

• Irrational

Multiple Choice

Is $$0.563$$  rational or irrational?

• Rational

• Irrational

Multiple Choice

Is $$0.52643...$$  rational or irrational?

• Rational

• Irrational

Multiple Choice

Is $$-\frac{7}{18}$$  rational or irrational?

• Rational

• Irrational

Multiple Select

Determine which numbers are irrational. Select all that apply.

• $$\sqrt{36}$$  
  

• $$\sqrt{23}$$  

• - 4.232323...

• 0.151551555...

• $$\pi$$  

Lesson 1-3 Compare and Order Real Numbers

Multiple Choice

Between which two whole numbers does $$\sqrt{89}$$  lie?

• 7 and 8

• 8 and 9

• 9 and 10

• 10 and 11

Multiple Choice

Compare and order the following numbers from least to greatest.     $$2.\overline{3}$$  , $$\sqrt{8}$$  , $$2.5$$  , $$2\frac{\text{1}}{\text{4}}$$  

• $$2.\overline{3}\ ,\ \sqrt{8},\ 2.5\ ,\ 2\ \frac{1}{4}$$  

• $$\sqrt{8},\ 2.5\ ,\ 2\ \frac{1}{4},\ 2.\overline{3}$$  
  

• $$2\ \frac{1}{4},\ 2.\overline{3}\ ,\ 2.5\ ,\ \sqrt{8}\$$  
  

Lesson 1-4 Evaluate Square Roots and Cube Roots

Multiple Choice

Is 27 a perfect square, a perfect cube, both, or neither.

• Perfect Square

• Perfect Cube

• Both

• Neither

Multiple Choice

Is 100 a perfect square, a perfect cube, both, or neither.

• Perfect Square

• Perfect Cube

• Both

• Neither

Multiple Choice

Is 64 a perfect square, a perfect cube, both, or neither.

• Perfect Square

• Perfect Cube

• Both

• Neither

Multiple Choice

Is 24 a perfect square, a perfect cube, both, or neither.

• Perfect Square

• Perfect Cube

• Both

• Neither

Fill in the Blank

A gift box is a cube with a volume of

512 cubic inches. What is the length

of each edge of the box?

Lesson 1-5 Solve Equations Using Square Roots and Cube Roots

Multiple Choice

$$x^3=64$$  

• x = 4

• x = 8

• x = 2

• x = 3

Fill in the Blank

$$x^2=49$$  

x = ?

Multiple Choice

$$x^2=125$$  

x = ?

• x = 5

• x = 25

• x =  $$\sqrt{125}$$  

• x =  $$\pm\sqrt{125}$$  

Multiple Choice

$$x^3=25$$  

• x = 5

• x = 25

• x = $$^{\pm\ ^3\sqrt{25}}$$  

• x = $$^3\sqrt{25}$$  
  

Lesson 1-6 Properties of Exponents

Multiple Choice

$$6^4\times6^{3\ }=$$  

• 6

• $$6^{12}$$  

• $$6^7$$  

• 1/6

Multiple Choice

$$\left(3^6\right)^{-2}$$  

• $$3^{-2}$$  
  

• $$3^4$$  

• $$\frac{1}{3^{12}}$$  

• $$3^{12}$$  
  

Multiple Choice

 Simplify the expression. $$\frac{7^8}{7^3}$$

• $$7^5$$  

• $$\frac{1}{7^5}$$  

• $$5^7$$  

• $$7^{24}$$  

Multiple Choice

7⁰

• 1

• 7

• 0

• -7

Multiple Choice

Simplify 6^-4

• 6⁴

• 1/6⁴

• 1/6

• 6²

Multiple Choice

Simplify 4³ ⋅ 6³

• 24⁶

• 24³

• 10³

• 10⁶

Lesson 1-7 Scientific Notation

Multiple Choice

Write 6,700 in scientific notation.

• 6.7 x 10³

• 6.7 x10^-3

• 67 x 10²

• 67 x 10^-2

Multiple Choice

Which number is the least in value

• 5.0 x 10^-9

• 5.0 x 10^-4

• 5.0 x 10⁶

• 5.0 x 10⁸

Multiple Choice

Which value is the greatest

• 5.0 x 10^-9

• 5.0 x 10^-4

• 5.0 x 10⁶

• 5.0 x 10⁸

Multiple Choice

Convert this number into scientific notation: 950,000

• 9.5 x 10⁵

• 9.5 x 10^-9

• 9.5 x 10²

• None of the above

Multiple Choice

Convert this number into scientific notation: 0.068

• 6.9 x 10⁶

• 6.8 x 10^-9

• 6.8 x 10^-2

• None of the above

Fill in the Blank

Convert this number to standard notation: 1.4 x 10^-2

Fill in the Blank

Convert this number to standard notation: 7.1 x 10⁴