Show:
Adding
Subtracting
Multiplying
Dividing
Mystery??
100

1.08 + 1.67

2.75

100

0.963 - 0.482

0.481

100

49.8 × 8

398.4

100

45.68 ÷ 4

11.42

100

0.84 + 0.144

0.984

200

0.053 + 0.60

0.653

200

0.749 - 0.658

0.091

200

3.83 x 4

15.32

200

91.44 ÷ 8

11.43

200

4.50 - 2.65

1.85

300

0.036 + 0.34

0.376

300

0.605 - 0.027

0.578

300

4.07 x 5.3

21.571

300

44 ÷ 0.8 

55

300

4.56 x 5.6

25.536

400

0.185 + 0.109

0.294
400

0.946 - 0.083

0.863

400

15.0 x 5.8

87.00

400

1.32 ÷ 0.02

66

400

8.52 ÷ 0.3

28.4

500

0.083 + 0.92

1.003

500

9.00 - 4.34

4.66

500

94.2 x 0.53

49.926

500

4.50 ÷ 0.15

30

500

0.726 ÷ 22

0.033