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Addition
Subtraction
Multiplication
Division
Decimals
100

a + 10 = 13

What is 3

100

d - 7 = 10

What is 17

100

7x = 63

What is 9

100

x/4 = 14

What is 56

100

x+2.1=3.4

x=2.3

200

25=x+3

What is 22

200

121=k-83

What is 204

200

5e = 400

What is 80

200

x/6 = 6

What is 36

200

1.1x=11

x=10

300

50=x+21

What is 29

300

665=x-35

What is 700

300

11x = 275

What is 25

300

28 = a/13

What is 364

300

x-2.4=3.6

x=6

400

100=x+100

What is 0

400
a-100=100

What is 200

400

21y = 756

What is 36

400

80 = x/15

What is 1200

400

x/2.2=2

x=4.4

500

300=x+1

what is 299

500

x-1=1

what is 2

500

11x=121

what is 11

500

10=x/2

what is 20

500

x+1.9=2.0

x=0.1