Mental Math Jeopardy!

Adding/Subtracting Fractions

100

1/2 + 3/2

2

200

2/9 + 7/12

29/36

300

7/10 - 2/10

1/2

400

3/2 - 6/11

21/22

Integers and Absolute Value

100

|-9|

9

200

|14-11|

3

300

-9+55

46

400

420-22

What is 318

Multiplying Fractions

100

5/45 x 8/45

8/9

200

9 1/2 x 3/2

57/4

300

8/30 x 1/2

2/15

400

-9/6 x 7/9

-7/6 or -1 1/6

Converting: Fractions, Decimal, and Percents

100

Write 208% as a decimal

2.08

200

Write 1.24 as a percent

124%

300

Write 6% as a fraction

3/5

400

Write 3/8 as a percent

37.5%

Random

100

89+72

161

200

75 divided by 3

25

300

2/8 divided by 2/3

3/8

400

A cookie recipe calls for 1 2/3 cups of sugar. If you plan on changing the recipe to make 2 1/2 times as much, how many cups of sugar will you need? 

25/6 or 4 1/6