Math 8 Review

Square and Cube Roots

100

Calculators down! 7²

49

200

Calculators down! 8³

512

300

Name the smallest set that this number belong in.

-7

Integers

400

Name all sets to which this number belongs.

1.5625

500

Calculators down! Approximate the square root of 68

8.2

Exponents

100

4⁰

1

200

3x^-4

3/x⁴

300

2y x 3y³

6y⁴

400

x⁵/2x⁷

1/2x²

500

(3x⁴y^-9z²)^-2

y¹⁸/9x⁸z⁴

Scientific Notation

100

Write the following number in standard form.

3.47 x 10⁴

3,470

200

Write the following number in scientific notation.

0.0000589

5.89 x 10^-5

300

Calculators down! (6.2 x 10^-4)(1.4 x 10^-3)

1.33 x 10^-4

400

Calculators down! (8.1 x 10^-1) - (4 x 10^-2)

7.7 x 10^-1

500

California has a population of approximately 3.9 x 10⁷ people while Wyoming has a population of approximately 5.8 x 10⁵ people. How many more people live in California than Wyoming?

3.842 x 10⁷ people

Equations

100

7.84 = 2.67 + w

w = 5.17

200

x² - 10 = 39

x = 7, -7

300

2k - 6 - 7 +3k = -48

k = -7

400

-4y + 6 = -3y + 12

-6 = y

500

1/3(24x - 54) = 11(x - 4) + 5

x = 7

Mixed Bag

100

n + 1/4 = 5/6

n = 7/12

200

What is the better buy? 

Crayola Crayons at $6.97 for 120 or Rose Art Crayons at $1.53 for 24.

Crayola Crayons

300

Translate the following equation: Seven more than the quotient of a number and 3 is 11. 

Do not solve.

n/3 + 7 = 11

400

Find the quotient of (1 x 10^-2) and (8 x 10^-5).

1.25 x 10²

500

Order the following numbers from greatest to least.

2/5, 5.8 x 10^-2, 2.45, 2/9, 6% 

2.45, 2/5, 2/9, 6%, 5.8 x 10^-2