Adding and subtracting
Multiplying and dividing
Distributive Property
Diagrams
Word problems
Substituting for x
100
x - 8 = 52
x = 60
52 + 8 = 60
100
4m = 24
m = 6
4 x 6 = 24
100
5 (5 + 9r)
25 + 45r
5 x 5 = 25
5 x 9 = 45
100
What does a equal?
a = 2
8 + 2 = 10
100
A truck driver drove 20 miles on Thursday and 30 miles on Friday. How many miles did he drive in all?
You must have an equation with a variable to support your answer
x = 50 miles
20 + 30 = x
20 + 30 = 50
100
What is the answer to the equation if x = 2?
x + 8 = ____
10
2 + 8 = 10
200
74 + y = 93
y = 19
93 - 74 = 19
200
8 = 16/x
x = 2
16 / 2 = 8
200
8 (20x + 3)
160x + 24
8 x 20 = 160
8 x 3 = 24
200
Write and equation for this hanger diagram
-8 = 2x + 5
200
Penny needs buy new pants. Each pair is $30. If she spent $120, how many pairs of pants did she buy?
You must have an equation with a variable to support your answer
x = 4 pairs
30x = 120 or
120/x = 30
200
Is the equation true if x = 5?
3x = 20
No - false!
3 x 5 = 15
300
102 + 37 = m
m = 139
102 + 37 = 139
300
7 = w/6
w = 42
7 x 6 = 42
300
78 (32y - 24)
2,496y - 1,872
78 x 32 = 2,496
78 x -24 = -1,872
300
Write an equation for this hanger
11 = y + 5
300
Billy has to clean 56 classrooms before he leaves the school. He has already cleaned 28. How many more does he have to go?
You must have an equation with a variable to support your answer
x = 28 classrooms
28 + x = 56 or 56 - 28 = x or 56 - x = 28
56 - 28 = 28
300
Is the equation true, if x = 4?
4x - 2 = 14
Yes - true!
4 x 4 = 16
16 - 2 = 14
400
234.55 - b = 96.42
b = 138.13
234.55 - 96.42 = 138.13
400
2/3y = 88
y = 132
88/1/2/3
88/1x3/2=264/2=132
400
4.5 (-21 - 98.04w + 6.23d)
-94.5 - 441.18w + 28.035d
4.5 x -21 = -94.5
4.5 x -98.04 = -441.18
4.5 x 6.23 = 28.035
400
What does x equal?
x = 7
3 x 7 = 21
400
If Sally has some pencils and wants to give an equal amount to her 12 friends, if each friend gets 7 pencils, how many pencils did she start with?
You must have an equation with a variable to support your answer
x = 84 pencils
12 x 7 = x or
x/12 = 7
400
What is the answer to the expression if x = 12?
1/4x + 2
5
1/4 (12) = 3
3 + 2 = 5
500
m - 94.03 = 120
m = 214.03
120 + 94.03 = 214.03
500
4/5x = 68
x = 85
68/1/ 4/5
68/1 x 5/4 = 340/4=85
500
-0.3 (2x - 66 + 72y)
-0.6x + 19.8 - 21.6y
-0.3 x 2 = -0.6
-0.3 x -66 = 19.8
-0.3 x 72 = -21.6
500
What does y equal?
y = 18
21 - 3 = 18
500
If one book costs $21.35, how many books can you buy with $298.90?
You must have an equation with a variable to support your answer.
x = 14 books
21.35x = 298.90
298.90 / 21.35 = 14
500
What is the answer to the expression if x = 18?
1/3x + 5 - 4
7
1/3(18) = 6
6 + 5 = 11
11 - 4 = 7