boomer's jeopardy:)

fractions

100

1/2+1/2

1

200

2/3+1/2

7/5 or 1 2/5

300

1/24x1/5

1/120

400

1/30x1/6

1/180

500

1/90x3/5

3/450

powers of 10

100

10²

100

200

10⁵

100,000

300

10¹⁰

10,000,000,000

400

10¹⁵

1,000,000,000,000,000

500

10²⁰

100,000,000,000,000,000,000

rounding decimals

100

round 2.47637 to the nearest tenth

2.5

200

round 3.67386 to the nearest hundredth

3.67

300

round 5.62762 to the nearest thousandth 

5.6276

400

round 1.37295 to the nearest ten thousandth

1.373

500

 round 9.462864 to the nearest hundred thousandth 

9.46286

multiplication

100

2x2

4

200

5x5

25

300

12x12

144

400

15x15

225

500

55x55

3025

square roots

100

what is the square root of 64

8

200

what is the square root of 81

9

300

what is the square root of 144

12

400

what is the square root of 169

13

500

what is the square root of 225 

15