8.2 - Numbers and Operations

Square and Cube root

100

Find the square root of 16

4

200

Find the square root of 64

8

300

Find the square root of 25

5

400

Find the cube root of 343

7

500

Find the cube root of 125

5

Negative Exponents

100

a^-1 = ?

1/a

200

1/9^2 = ?

9^-2

300

4^-3 = ?

1/4^3

400

1/x^3 is equivalent to...

x^-3

500

b^-3 = ?

1/b^3

Scientific Notation

100

Write in scientific notation

427,000

4.27 x 10^5

200

Express this number in scientific notation

0.0002077

2.077 x 10^-4

300

Express this number in standard form

9.647 x 10^7

96,470,000

400

Express this number in scientific notation

96,470,000

9.647 x 10^7

500

Express this number in standard form

5.301 x 10^7

53,010,000

Unit Test

100

Is the following number rational or irrational?

-2pi

irrational

200

Simplify

(x^2)^4

X^8

300

Estimates show that there are 1.4 x 10^8 pet fish and 9.4 x 10^6 pet reptiles in the United States. 

How many fish and pet reptiles are in the United States all together?

1.494 x 10^8

400

What type of number is 3 2/3? 

Choose all that apply:

A. whole number

B. integer

C. rational

D. irrational

C

500

Find the cube root of 512

8