Show:
Addition
Subtraction
Multiplication
Decimals
Mystery
100

12 + 13 =

25

100

7 - 2 =

5

100
1 x 8 =

8

100

1.7 + 2.1 =

3.8

100

9 - 0 =

9

200

15 + 9 =

24

200

9 - 5 =

4
200

2 x 7 =

14

200

2.4 + 3.5 =

5.7

200
14 + 30 =

44

300

48 + 90 =

138

300

10 - 6 =

4

300

4 x 9 =

36

300

13.0 + 3.8 =

16.8

300

5 x 8 =

40

400

639 + 145 =

784

400

89 - 16 =

73
400

23 x 3 = 

69

400

15.3 + 12.3 =

27.8

400

189.6 + 67.0 = 

256.6

500

879 + 333 =

1,212

500

78 - 19 = 

59

500

14 x 12 =

168

500

102.7 + 127.4 =

230.1

500

78 x 34 =

2,652