Review of Solving for the variable

Addition

100

x + 15 = 45

x= 30

200

x + 35 = 60

x= 25

300

x + 47 = 70

x= 23

400

x+ 36= 63 

x= 27

500

x+ 50= 127

x= 77

Subraction

100

9-x= 6

x= 3

200

30-x= 18

x= 12

300

45- x= 20

x= 25

400

56-x= 14 

x= 42

500

68-x= 13 

x= 55

Multiplication

100

t x 4 = 16 

t= 4

200

t x 11 = 77

t= 7

300

t x 8 = 64

t= 8

400

t x 5= 60

t= 12

500

t x 7 = 98

t= 14

Division

100

12 / x = 3

x= 4

200

36 / x = 3

x= 12

300

42 / x= 6

x= 7

400

55/ 11 = x

x= 5

500

130/ x = 3

x= 65