Algebra

Expression

100

Simplify: 3x + 4x - 2x

5x

200

Expand: 2(3x - 5)

6x - 10

300

Evaluate: 4x - 7 when x = 3

5

400

Simplify: (2x + 3) + (5x - 1)

7x + 2

500

Factor: 12x + 18

6(2x + 3)

600

Expand and simplify: (x + 2)(x - 3)

x² - x - 6

1-Step Equations

100

Solve for x: x + 5 = 12

x = 7

200

Solve for x: 4x = 24

 x = 6

300

Solve for x: x/3 = 9

x = 27

400

Solve for x: x - 7 = -2

x = 5

500

Solve for x: -3x = 15

x = -5

600

Solve for x: 2/5x = 8

x = 20

2-Step Equations

100

Solve for x: 2x + 3 = 11

x = 4

200

Solve for x: 5x - 4 = 21

x = 5

300

Solve for x: 3(x - 2) = 9

 x = 5

400

Solve for x: (x/4) + 3 = 7

x = 16

500

Solve for x: -2x + 8 = 4

x = 2

600

Solve for x: 4(x + 1) - 3 = 13

x = 3

Riddles

100

Translate into an equation: "The sum of twice a number and 5 is 15."

2x + 5 = 15

200

A number decreased by 7 is at most 12. Write an equation.

x - 7 = 12

300

The sum of three consecutive numbers is 81. Find the numbers.

26, 27, 28

400

The perimeter of a rectangle is 24. If the length is twice the width, write an equation to find the dimensions.

2(2x + x) = 24

500

A phone plan costs $20 per month plus $0.10 per text. Write an equation to find the total cost (C) for t texts.

C = 20 + 0.10t

600

Solve: The difference between three times a number and 4 is equal to twice the number plus 7.

3x - 4 = 2x + 7

x = 11