Pre-Algebra Review

Integers

100

-23 + 16

-7

200

-36 + -40

-76

300

5 - (-3) + 2

10

400

-6 - 5 x 3

-21

500

[-9 - (2 + -5)]²

36

Equations and Inequalities

100

x - 12 = 20

x = 32

200

x/-6 = -8

x = 48

300

5x + 3 = -22

x = -5

400

5(x + 4) = 60

x = 8 

500

6x - 4 = 5x

x = 4

Fractions

100

-4/5 + 5/9

1/9

200

-2 1/3 * 3 3/5

-42/5 or -8 2/5

300

-6 2/3 - 4 7/8

-277/24 or -11 13/24

400

-1 2/5 ÷ -8 3/10

14/83

500

4/9x - 2 = 2/3

x = 6

Ratios, Proportions, Percents

100

If there are 40 pens and 35 pencils in a box, what is the ratio of pencils to pens in simplest form?

7/8

200

What is 20% of 75?

15

300

5 is 25% of what?

20

400

What percent is 40 out of 45?

88 8/9%

500

A dress shirt is on sale for 20% off the original price of $32. What is the sale price of dress shirt?

$25.60

Data and Probability

100

What is the mean of this data set?

18, 28, 8, 20, 12

17.2

200

What is the median of this data set?

71, 53, 67, 74, 50, 68, 51, 63, 79, 60

65

300

Find the mininum, Q₁, median, Q₃, and maximum of this data set:

1, 3, 5, 6, 7, 9, 10, 20, 24

min = 1

Q₁ = 4

med = 7

Q₃ = 15

max = 24

400

Each letter in the word ALGEBRA is written on a separate slip of paper and placed in a hat. A letter is chosen at random from the hat. What is the probability that the chosen letter is a consonant?

4/7

500

How many possible lunch combinations are there of 4 drinks, 3 sandwiches, 2 salads and 3 deserts?

72