Addition
Subtraction
Multiplication
Division
Mystery
100

x+4=9

x=5

100

n−6=15

n=21

100

2q=16

q=8

100

x÷6=7

x=42

100

x-26=0

x=26

200

a+12=20

a=8

200

y−32=58

y=90

200

3p=24

p=8

200

y÷3=4

y=12

200

n÷9=2

n=18

300

y+567=892

y= 325

300

b−18=28

b=46

300

11r=99

r=9

300

b÷12=5

b=60

300

r+165=495

r=330

400

a+1345=1980

a= 635

400

n−375=825

n=1,200

400

5m=45

m=9

400

q÷11=8

q=88

400

8y=64

y=8

500

b+7865=10000

b=2135 

500

m−250=750

m=1000

500

6c=72

c=12

500

m÷12=9

m=108

500

x−487=1,562

x= 2,049

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