Algebraic Equations

Solve it!

100

2x=12

x=6

200

2x=x+3

x=3

300

x+4=2x+3

x=1

400

3x+8=x+10

x=1

500

4x=2x+6

x=3

Missing Pieces

100

_+6 = 11

5

200

___ - 3 = 10

13

300

4X = ___ if X = 5

20

400

(X ÷ 2) = 4; X = ___

8

500

3X = ___ if X = 4

12

Explain that!

100

What is a variable?

A letter that represents a number

200

What does the equal sign mean?

Both sides are the same

300

How do you check your answer?

You plug it back in! 

400

What does it mean for an equation to be balanced?

Both sides are equal

500

What is the difference between an expression and an equation?

An equation has an equal sign, an expression does not

Balance the equation

100

Can you do the same thing to both sides of the equation? 

yes 

200

If you add 3 to one side what do you do to the other?

Add 3 

300

What is the INVERSE (opposite) of subtraction?

Addition

400

What happens if you multiply both sides of an equation by 0?

Both are 0

500

If X + 4 = X + 8, is this a balanced equation?

No, the values on each side are not the same

Trick Questions

100

True or False: X + 5 = 10, then X = 4

False

200

Can X be on both sides of an equation?

Yes

300

True or False: Equations must use X

False

400

 If 2X = 10, is X = 4?

no

500

Can X ever equal 0?

YES!