6th Grade Mental Math Review

Exponents

100

2²

4

200

3⁰

1

300

6²

36

400

2³

8

500

3³

27

Solve Equations

100

x + 7 = 25

x = 18

200

x - 7 = 25

x = 32

300

7x = 35

x = 5

400

x / 7 = 8

x = 56

500

2x + 1 = 15

x = 7

The Coordinate Plane

100

Which quadrant has all positive numbers?

Quadrant 1

200

Which quadrant would (-3, -4) be in?

Quadrant 3

300

What is the ordered pair of point S?

(-6, 4)

400

If point R is reflected across the x-axis, what would the coordinates be?

(3,-4)

500

If point R is reflected across the y-axis, what would the ordered pair be?

(-3, 4)

Unit Rate

100

It costs $50 for 10 drinks.  What is the price per drink?

$5 per drink

200

A plane flies 600 miles in 2 hours.  What is it's speed?

300 miles per hour

300

You buy 8 bags of chips for $32.00.  What is the unit price?

$4 per bag.

400

What's the speed for typing 120 words in 4 minutes.

30 wpm

500

I filled up my 10 gallon gas tank for $44.  What is the price per gallon?

$4.40/gallon

Percents

100

100% of 50?

50

200

50% of 60

30

300

25% of 60

15

400

200% of 40?

80

500

10% of 90?

9