Algebraic Equations

Addition/Subtraction

100

x+9= 15

x=6

200

20+ x =48

x=28

300

x+8= 14

x=6

400

21= d-6

x=27

500

12= x-12

x=24

Multiplication/Division

100

4x=20

x=5

200

x/2 = 5

x=10

300

5x=80

x=16

400

3= 24/x

x=8

500

48 = 12x

x=12

Key Knowledge

100

What is the opposite operation of SUBTRACT?

Add

200

What is the opposite operation of ADD?

Subtract

300

What is the opposite operation of MULTIPLY?

Divide

400

What is the opposite operation of DIVIDE?

Multiply

500

If it looks like a fraction, what is the operation?

Divide