Show:
Estimation
Multiplication
Long Division
Add/Subtract
Powers of 10
100

31 x 44

1,200

100

32 x 57

1,824

100

0.96 / 2

0.48

100

246.25 + 17

263.25

100

32 x 102

3,200

200

181 x 520

100,000

200

258 x 43

11,094

200

6.72 / 3

2.24

200

98.76 + 29.87

128.63

200

7.9 x 103

7,900

300

489x83

40,000

300

17.5 x 157

2,747.5

300

1.324 / 2

0.662

300

46.9 - 5

41.9

300

450 / 102

4.5

400

6.5 x 52

350

400

257 x 0.36

92.52

400

9 / 6

1.5

400

64.00 - 8.23

55.77

400
2.14 / 102

0.0214

500

58.7 x 24

1,200

500

3.256 x 79

257.224

500

0.9 / 4

0.225

500

60 - 42.39

17.61

500

3.2 / 104

0.00032