Mental Math Jeopardy

Multiplication

100

3x4

12

200

6x7

42

300

12x5

60

400

25x4

100

500

150x1000

150,000

Division

100

66 divided by 11

6

200

120 divided by 10

12

300

140 divided by 2

70

400

900 divided by 3

300

500

10000 divided by 10000

1

Adding Fractions

100

3/4 + 1/4

1 or 4/4

200

2/8 + 3/8

5/8

300

1/3 + 2/6

4/6 or 2/3

400

12/20 + 1/10

14/20 or 7/10

500

1/2 +1/2 + 1/2 + 1/2

2 or 4/2

Area

100

A square box is 12 feet long. What is it's area?

144 feet²

200

My garden is 6 feet long and 3 feet wide. What is the area of my garden?

18 ft²

300

The area of a square is 25 feet². What is the length of one side?

5 feet

400

My deck is 12 feet wide and 5 feet long. What is the area of my deck?

60 feet²

500

A normal piece of printer paper is 8.5 inches by 11 inches. Rounding up, what is the area of the paper?

99 inches²

Place Value

100

What is the expanded form of this number? 2,301

2000+300+1

200

What is the standard form of this number? Two-hundred and forty-five

245

300

What place is the number "6" in? 3.46

Hundredths

400

How many tenths makes a whole?

10

500

What place value is the 9 in this number? 34.9

9 tenths or 9/10