Mental Math Jeopardy

Adding

100

17 + 32

49

200

11 + 12 + 13

46

300

110 + 23

133

400

-5 + (-6) =

-11

500

190 + (-60) =

130

600

230 + 34

264

Multiplication

100

10 * 5

50

200

5 * 2 * 3

30

300

7 * 2 * 2

28

400

12 * 12 =

144

500

11 * 20

220

600

30 * 30

900

Solve for N

100

5 + n = 10 

(what number does n stand for?)

n=5

200

9 * n = 54

(what number does n stand for?)

n= 6

300

n + 10 = 20

(what number does n stand for?) 

10

400

2n + 23 = 43

(What number does n stand for?)

n = 10

500

5n / 10 = 4

n = 8

600

n + 4² = 21

(what does n stand for?)

n= 5

PEMDAS

100

10 ²

100

200

5 + 2²   

5 + 4 = 9

300

9 + 2 * 3

(PEMDAS)

15

400

9 - 2²    

5

500

15 - 6 * 2 + 3 * 2

9

600

64 / 2 + 3*3

41

Miscellaneous

100

Any number divided by itself is always:  

1

200

How many sides does a pentagon have?

5

300

If a yard has 4 sides that are 20 feet long, how many feet of fence would it take to enclose the yard?

80 

Perimeter = 20 feet * 4 sides

400

What is it called when you need to know the distance around the outside of something?

Perimeter

500

How many days does February have?

28 (every 4 years it has 29 - leap year)

600

How many faces does a dice have?

6