Math Review

Equations

100

n - 3 = -5

What is n = -2

200

y + 14 = 20

What is y = 6

300

12 = 2y + 6

What is y = 3

400

2x + 5 = 1

What is x = -2

500

-1 = 3 - 4n

What is 1 = n

Scientific Notation

100

Express the following in scientific notation

                .0000158 

What is 1.58 x 10^-5

200

Multiply:  ( 4 x 10⁵ )  ( 3 x 10⁷ )

What is 1.2 x 10¹³

300

Divide:  ( 9 x 10⁷) / ( 3 x 10⁴)

What is 3 x 10⁴

400

Subtract:  ( 5.8 x 10⁷) - ( 5 x 10⁶)

What is 5.3 x 10⁷

500

Add:  ( 2 x 10⁹) + ( 4.5 x 10⁷)

What is 2.045 x 10⁹

Exponents

100

100⁰

What is 1

200

4n² x 2n⁴ x n

What is 8n⁷

300

21x⁴ / 7x^-2

What is 3x⁶

400

Simplify:  ( 5a³) ( 4a^-3) ( a²)

What is 20a²

500

Simplify:  ( -7a³b) ( +5a²b²)

What is -35a⁵b³

Like terms/Parenthesis

100

Simplify:  4y + 23 - y - 6

3y + 17

200

3n - n + 2 = -8

What is n=-5

300

2 ( 2n + 1 ) - 3n = 5

What is n=3

400

6n - ( n + 1 ) = 11

What is 2.4

500

3 ( n + 4 ) + 2 ( n - 3 ) = 31

What is n=5

Integers

100

- 2 + ( - 7 ) 

What is -9

200

- 2 - ( - 5 )

What is 3

300

- 3.2 x 0.03

What is -0.096

400

6 + 2 x 5 / 8 - 7 + 1

What is 20

500

-2/3 + 1  2/9

What is 5/9