Math Mayhem

5th

100

What is 8x7?

What is 56?

200

What is the perimeter of a 6x4 rectangle?

What is 20?

300

Simplify 3/4 + 2/5

What is 23/20?

400

Area of a triangle with base 10 and height 5.

What is 25?

500

Write 3.2 as a fraction in lowest terms.

What is 16/5?

6th

100

Evaluate 18/3+12

What is 8?

200

The mean of {5,8,12,15}

What is 10?

300

Convert 0.375 to a fraction.

What is 3/8?

400

Simplify 7³

What is 343?

500

A cylinder has radius 3 and height 10. What’s its volume? (V=πr²h)

What is 90π?

7th

100

Solve for x: 2x+5=15

What is x=5?

200

Factor x²−5x+6

What is (x-2) and (x-3)?

300

Solve (2/3)x=8

What is x=12?

400

Simplify (4/9) / (2/3).

What is 2/3?

500

Solve for x. x³-27=0

What is x=3?

8th

100

Simplify 3(2x−4)

What is 6x-12?

200

Find the slope of the line through (1,2) and (4,8).

What is 2?

300

Solve for x. x²-6x+8=0

What is (x-2) and (x-4)?

400

Expand (x+3)²

What is x²+6x+9?

500

Simplify (x²-9)/(x²-6x+9)

What is (x+3)/(x-3)?

9th

100

Solve x²-9=0

What is x=+-3

200

Simplify (x²-4)/x-2

What is x+2?

300

Simplify sqrt50+sqrt18

What is 5sqrt2+3sqrt2=8sqrt2?

400

Solve the system.

2x+y=7

x-y=1

What is (2,3)?

500

Factor completely. x³-4x²-7x+28

What is (x-4) and (x+-sqrt7)?