Brain Quest Math

4th Grade Math

100

3/8 x 1/5 =

3/40

200

4.12 + 5.5 =

9.62

300

235.5 + 48.6 =

284.1

400

2x = 676     x =?

338

500

45 + 5 x 7 = 

80

5th Grade Math

100

Factors of both 12 and 48

1,2, 3, 4, 6,12

200

5.97 x 4

23.88

300

2/5 + 3/10

7/10

400

46.5 - 14.42

32.08

500

48 ÷ (2+4) • 2

16

6th Grade Math

100

Simplify this equation:  4(3x+5)

12x + 20

200

What is 10% of 50?

5

300

If n³ = 64, n = ?

4

400

What is 75% of 12?

8

500

Simplify this equation:  3x + 5+ 4x - x - 3 

6x + 2

7th Grade Math

100

4 - 5 + 1

0

200

3/4 = x/20  x = ?

15

300

What is the probability of rolling a number greater than 4 on a number cube?

2/6 or 1/3

400

-2x + 5 = 19 Solve for x.

x = -7

500

-4x - 5 > 19 Solve the inequality.

x < -6

8th Grade Math

100

6² x (2 + 3) 

180

200

A dog and a cat sell for the same price as 12 hamsters.  Five cats sell for the price of one dog.  

____ hamsters = price of 1 dog

10 hamsters

300

4x -5 + 2x - 6 = - 53 Enter the value of x that makes the equation true.

x = -7

400

What is the approximate volume of a cylinder with radius 1 unit and height 10 units?

about 31.4 cubic units

500

What is the surface area of a cube with side length 5 units?

150 square units