Show:
subtraction
addition
rounding
multiplication
nerds 1
100

510 - 498=?

12

100

50 + 100=?

150

100

Round 15 to the nearest ten

20

100

6 X 6=?

36

100

1 + 1

2

200

678 - 345=?

333

200

560 + 135=

695

200

Round 549 to the nearest hundred

500

200

60 X 5 =?

300

200

5 X 5 =?

25

300

1000 - 900 = ?

100

300

985 + 743 = ?

1,728

300

Round 165 to the nearest ten

170

300

70 X 7=?

490

300

25/5=?

5

400

1,900 - 60 = 

1,840

400

999 + 777 = ?

1,776

400

Round 1,151 to the nearest thousand

1,000

400

199 X 7 =?

1,393

400

727+121=?

848

500

1,115 - 916 = ?  

199

500

999+987=

1,986

500

Round 5,510 to the nearest thousand

6,000

500

315 X 6 =?

1,890

500

456 x 7 =?

3,192