Ch. 2

1
Ch. 2
Properties Add or Subtract? Multiply or Divide? Graph It! Stories
10 10 10 10 10
20 20 20 20 20
30 30 30 30 30
40 40 40 40 40
50 50 50 50 50
2
ANSWER
3
Commutative Property of Multiplication
4
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5
ANSWER
6
Identity Property of Multiplication
7
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8

ANSWER
9
Commutative Property of Addition
10
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11
ANSWER
12
Associative Property of Multiplication
13
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14
Which shows the Associative Property of
Addition?
A. 8 6 7 8 7 6
B. (10 5) 15 10 (5 15)
C. 9 0 (-1) 9 (-1)
.
.
.
D. (-2) 1 9 (-2) 9
ANSWER
15
B.
B. (10 5) 15 10 (5 15)
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17
a 6 13
ANSWER
18
a 6 13
- 6 -6
a 7
19
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20
d - 5 - 7
ANSWER
21
d - 5 -7
5 5
d - 2
22
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23
t (-3) 7
ANSWER
24
t (-3) 7
3 3
t 10
25
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26
DAILY DOUBLE!!!!!
27
X 10 20 - (-5)
ANSWER
28
X 10 20 - (-5)
- 5 - 5
X 5 20
- 5 - 5
X 15
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30
- 3 y 5 - 6
ANSWER
31
- 3 y 5 - 6
- 3 y - 1
3 3
y 2
32
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33
3x 9
ANSWER
34
3x 9
3x 9
3 3
x 3
35
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36
Y 2
8
ANSWER
37
Y 16
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39
5a 10 5
ANSWER
40
a 3
41
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42
8p 2p 10
ANSWER
43
p 1
44
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45
7c 42
ANSWER
46
c 6
47
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48
X lt 8
ANSWER
49
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50
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51
t gt 4
ANSWER
52
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53
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54
n lt -5
ANSWER
55
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56
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57
-9 lt S
ANSWER
58
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59
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60
X - 6 lt - 3
ANSWER
61
X - 6 lt - 3
6 6
X lt 3
62
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63
A photograph is 6 in. x 4 in. If you make a copy
of the photograph with double the length and
width, what is the area of the copy?
ANSWER
64

1. 96 in.2

65
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66
Caras age is 4 times Lauras age. If Cara is 16,
how old is Laura?
ANSWER
67
C Caras age L Lauras age is means
C 4 x L 16 4L
C 4 x L 16 4L
4 4
4 L
68
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69
On a recent test, the lowest score was one fourth
the highest score. If the lowest score was 25,
how much higher was the highest score?
ANSWER
70
C. 75

71
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72
Two runners ran as a team in a 5,000-m relay
race. The first runner ran 500m farther than the
second runner. How many meters did each run?
ANSWER
73
5000 (S 500) S
F S 500
S 2250
F 2750
74
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75
The Smiths have two children. The sum of their
ages is 23. The product of their ages is 132. How
old are the children?
ANSWER
76
The Smiths have two children. The sum of their
ages is 23. The product of their ages is 132. How
old are the children?
23 B G
23 B G
132 B(G)
132 B(23- B)
132 23B- B2
77
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