Intro to Pre-Algebra

Negative Numbers

100

-123 + 256

133

200

-45 - - 64

19

300

-564 - 1243

-1807

400

-696 ÷ 12

-58

500

-123 * -45

5535

Fractions

100

2/3 * 1/2

1/3

200

3/4 * 12/6

3/2

300

5/4 ÷ 3/2

5/6

400

11/3 -5/2

7/6

500

7/9 + 5/6

29/18

Solving Equations

100

-2x = 50

x = -25

200

x/5 = -1

x = -5

300

x -10 = -15

x = -5

400

2x + 3 = 13

x = 5

500

-x -15 = -30

x = 15

Area and Perimeter

100

What is the area of a rectangle with length 10 ft and height 3/2 ft?

15 ft²

200

What is the perimeter of a rectangle with length 10ft and width 3/2 ft?

23 ft

300

Kelsey needs 200 ft² of rug to fill up her room. If the length of her room is 40ft, what is the width?

5ft

400

Joba needs 100ft of fencing to fence his yard. If the length of the yard is 30ft, what is the width?

20 ft

500

Find the side lengths of a rectangle where the area and perimeter are the same. 

ex. a square with side length 4 cm 

Word Problems

100

Create an algebraic expression to represent the situation: Claire ate x hot dogs. All together, she and her friend ate 6 hot dogs. How many hot dogs did Claire's friend eat?

6 -x hot dogs

200

Create an algebraic expression to represent the situation: Eric is splitting the dinner bill with his f friends. The bill is $60. How much did each person pay?

$ 60/(f+1)

300

Create an algebraic expression to represent the situation: The Johnson's have t trees in their yard. 2/3 of them are lemon trees. How many are lemon trees?

2/3 t lemon trees

400

After paying $4.30 for a burrito, Normana has $12.32 left. Create an equation and find how much money she had originally.

x = original amount of money

x-4.30 = 12.32

x = 16.62

500

Dennis is splitting a check for $90 among him and his friends. Each person ends up paying $15. Create an equations and find how many people there were.

x = number of people

90/x = 15

x = 6