7th Grade Math Prep

What is the value of 3x + 5 when x = 4?

• 17

• 21

• 12

• 9

Simplify: 2(3x - 4) + 5

• 6x - 3

• 3x - 4

• 12x - 3

• 6x + 3

Find the area of a rectangle with length 6 cm and width 4 cm.

• 18 square cm

• 30 square cm

• 24 square cm

• 10 square cm

Solve for x: 2x + 7 = 15

• x = 4

• x = 5

• x = 6

• x = 10

If a car travels at 60 mph, how far will it travel in 3 hours?

• 200 miles

• 90 miles

• 150 miles

• 180 miles

What is the volume of a cube with side length 5 cm?

• 100 cubic cm

• 25 cubic cm

• 125 cubic cm

• 150 cubic cm

Simplify: 4x - 2(x + 3)

• 2x + 6

• 2x - 3

• 2x - 6

• 6 - 2x

Calculate the mean of the following numbers: 12, 15, 18, 21

• 19.5

• 16.5

• 14.5

• 22.5

If a shirt costs $20 and is on sale for 25% off, what is the sale price?

• $10

• $22

• $15

• $18

What is the value of 5^2 - 3 * 4?

• 16

• 20

• 7

• 13