addition
subtraction
multiplication
division
100

1.1 +  4

5.1

100

13.2 - 9

4.2

100

1.4 x 2

2.8

100

2.2/2

1.1

200

5.1 + 5

10.1

200

14.5 -12.0

2.5

200

2.0 x 6

12.0

200

4.3/2

2.15

300

10.9 + 10

20.9

300

89 -29.5

59.5

300

4.5 x 9

40.5

300

6.5/6

1.083

400

30+.9

30.9

400

8-3.8

4.2

400

100.6 x 6

603.6

400

10.1/5

2.02

500

13.6 + 20.8

34.4

500

9.6 -8

1.6

500

45.9 x10

459

500

5.3/3

1.767

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