Prealgebra Review

Solve one and two step equations

100

6 + 𝑥 = 30

x = 24

200

10𝑥 = 20

x = 2 

300

4𝑥 − 6= 26

x= 8 

400

-9 − 5𝑥 = 31

x = -8

500

x/5 - 3 = -15

x = - 60

Solve multi-step equations

100

5𝑥 + 1𝑥 − 1 = 17

x=3 

200

2x + 3x + 5 = 30 

x = 5 

300

5(𝑥 − 2) = 24

x = 6.8 or 34/5

400

6 (𝑥 − 4) = 12𝑥 + 5

x = -29/6 or -3.833

500

5/3 + 2/3x = 6x 

x = 5/16 or .3125

Scientific Notation

100

Write 0.00023400 in scientific notation?  

2.3 x 10 ^-4

200

Simplify:  (2.3 x 10⁴) (3.5 x 10^-2) 

8.05 x 10²

300

Simplify:  4.8 x 10⁵/2 x 10³ 

2.4 x 10² 

400

2.34 x 10² + 3.4 x 10³

2.374 x 10^-1

500

When writing in scientific notation, the number has to be between ____ and _____ 

1 and 10

Extras

100

What comes first in an order pair 

what is "x" 

200

What letter represent slope and y intercept 

Slope = m and y-intercept = b

300

What is my slope and y intercept 

y = 5x - 7

m= 5, b = (0,-7)

400

Is this relation a function? 

(1, 2) (3, 4) (5, 6) (7, 2)

 yes it is a function 

500

What is 2,548,000 in scientific notation? 

2.54 x 10⁶