Basic Algebra

Vocabulary

100

What is a variable?

A symbol or latter that represents the number.

200

What is a constant?

A number that does not change.

300

What is an equation?

A mathematical statement with an equal sign 

400

When you want to move a constant or variable from one side to another, do you have to do the same operation to both sides? True or False?

True

500

What are inverse operations? 

Addition and Subtraction 

Multiplication and Division

Adding

100

y + 5 = 11

y=6

200

r + 21 = 32

r =11

300

b - 2 = 8

b = 10

400

16 + h = 24

h = 8

500

b + 56 = 112

b = 56

Subtracting

100

x - 8 = 16

x = 24

200

g - 5 = 15

g = 20

300

6 - j = 2

j = 4

400

18 - a = 10

a = 8

500

h - 13 = 26

h = 39

Substitution

100

16 + a = 

a = 9

25

200

32 - b = 

b = 22

10

300

14x =

x = 4

56

400

81/c = 

c = 9

9

500

13a + a =

a = 3

42

Multiplying and Dividing

100

13x = 26

x = 2

200

16 / b = 2

b = 8

300

24b = 72

b = 3

400

64 / x = 4

16

500

14x - 7 = 7

x = 1