One-Step Equations

Addition

100

X+7=12

5

200

X+13=24

11

300

X+54=63

9

400

X+18=37

19

500

X+75=99

24

Subtraction

100

X-10=28

38

200

X-15=30

45

300

X-17=70

97

400

X-25=32

57

500

X-(-32)=30

-2

Multiplication

100

6(x)=48

8

200

4(x)=48

12

300

5(x)=-30

-6

400

7(x)=-49

-7

500

-9(x)=81

-9

Division

100

x/9=-6

-54

200

x/8=8

64

300

X/-7=-6

42

400

X/11=-12

132

500

X/12=12

144

Rules

100

Same sign in multiplication and division means the answer will be...

Positive

200

Different sign in multiplication/division means the answer will be 

Negative 

300

Different signs when adding integers means you have to?

subtract and keep the sign of the bigger number. 

400

Same sign when adding integers means you.

Add and keep the sign 

500

If you have 7 - (-7) what would the answer be. 

14