Pre-algebra Review

Lines & Exponents

100

Using the formula for a linear equation: y = mx + b, what do the "m" and "b" represent?

"m" is the slope of the line and "b" is where the line crosses the y axis (also called the y intercept)

200

If you have a straight line with the points : (2, 3) and (4, 9), what is the slope of the line?

3

300

How do you find the slope of a line if you were given two points?

You would take two points.  Then, you would find the change in the y values divided by the change in the x values.

400

What is the answer to this multiplication problem: x² (x^-5)

x^-3

500

Given this system of equalities, what is the ordered pair that shows the solution? (the location where the two lines cross)?

y = -2x + 6 and y = 2x + 18

(-3, 12)

Mental Math

100

286 + 309

595

200

692 - 487

205

300

-28 + 17

-11

400

117 / 13

9

500

14 x 98

1372

Fraction Fun

100

What is 2/8 + 4/6?

22/24 or 11/12

200

What is:  5/10 x 7/5?

35/50 or 7/10

300

What is 2/3 of 36?

24

400

What is the sum of 1/6, 1/4, 2/3, 3/5?  (Written as a mixed number)

1  41/60

500

What is 5/20 written as a decimal? And what is 5/20 written as a percent?

0.25 and 25%

Multistep Equations

100

Solve for x:

5x + 6 = 4x - 5

x = -11

200

Solve for y:      

3(2y - 6) = 12y + 48

y = -11

300

Solve for x:

-3x(6-2) = -13x+85

x = 85

400

13a + 17a = -a(-6 - 4)

a = 0

500

5 (2a - 8) = -4 (-6a + 3)

a = -2

Order of Operations

100

-2 x -4 + (10 - 2)²

72

200

4 + 35/7 - 3³ + -6

-24

300

1/2 x (3 + 3)³

108

400

3² - (7-5) + 8/4 + (-2)³

1

500

(38-40)²/(1/2 x 2/3 x 6)

2