Addition
Subtraction
Multiplication
Division
Surprise
100

x + 7 = 16

x=9

100

x - 10 = 7

x = 17

100

2x = 12

x=6

100

x/3 = 3

x= 9

100

x - 7 = 90

x = 97

200

x + 4 = 28

x=24

200

x - 7 = 23

x = 30

200

6x= 18

x=3

200

x/3= 9

x = 27

200

x - 89 = 111

x = 200

300

x + 18 = 34

x = 16

300

x - 25 = 50

x = 75

300

5x= 45

x = 9

300

x/4 = 12

x = 48
300

x/4 = 12

x = 48

400

x + 456 = 496

x = 40

400

x - 37 = 81

x = 118

400

9x = 72

x = 8

400

x/8 = 7

x = 56

400

7x = 63

x = 9

500

x + 79 = 108

x = 29

500

x - 5 = 7383

x = 7388

500

10x= 1000

x= 100

500

x/11= 12

x = 132

500

x + 632 = 896

x = 264

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