Numbers and Operations Chapter Questions
1. Draw a Venn Diagram showing the Number System
2. Explain what absolute value represents.
3. Create an owing money example for comparing two negative numbers.
4. Explain how you can use absolute value to add rational numbers.
5. Why can rational number subtraction problems be turned into addition problems?
6. Why are the rules for multiplying and dividing rational numbers the same?
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Numbers and Operations Chapter Problems
Addition, Subtraction and Integers
Classwork
1. Name 5 integers.
2. Name 5 numbers that are rational but not integers.
3. What is the opposite of 20?
4. What is the opposite of -13.5?
5. Find:
a. │-12│
b. │ 25
c.
1
│
3
│-47.27│
d. │ 11
5
│
7
6. Which numbers have the number given as their absolute value?
a. 150
b. 75.47
c. 14½
d. 1250.3
7. How would you explain to a new student how to find the absolute value of -10 and +10?
8. Place the appropriate inequality symbol between the following pairs of numbers:
a. 3
-7
b. -8.75
-10.3
c. 12
-11
d. 7½
7½
e. -4
0
f.
0
5. 3
9. Draw a number line and mark and label points for these numbers: 4.3, -7, 5, 0, -2.7, 1.8, -4.1
10. Draw a number line and mark and label points for these numbers: -15.1, 0, 7
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1
, 4, -3.8, -1.2, 9
2
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Homework
11. What is the opposite of -50?
12. What is the opposite of 11.3?
13. What is the opposite of 2?
14. What is the opposite of -7.98?
15. Find:
a. │ 13
2
│
9
b. │-35.74│
c. │-55│
d. │3½ │
16. Which numbers have the number given as their absolute value?
a. 72
b.
28
1
4
c. 155.35
d. 2500
17. How would you explain to a new student how to find the absolute value of 27.8 and -27.8?
18. Place the appropriate inequality symbol between the following pairs of numbers:
a. 25
-25
b. -30.3
-30.3
c.
 15
2
5
d. -99.8
e. -5.75
f. 0
 15
2
5
-100.1
0
-1
19. Draw a number line and mark and label points for these numbers: 15.2, -3½ , 0, 12
1
, -9, 7.8, 11
3
20. Draw a number line and mark and label points for these numbers: -9.25, 1, 0, -3, 9.5, -1,  8
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Addition and Subtraction of Integers
Classwork
21. Show the addition problem on a number line, and give the answer.
a. 4 + 2
b. 4 + (-2)
c. -4 + 2
d. -4 + (-2)
e. -4 + 4
22. Decide whether the statements below are always true, sometimes true, or always false. Give
examples to support your answer.
a. The sum of two positive numbers is a positive number.
b. The sum of a negative number and a positive number is a positive number.
c. The sum of two negative numbers is a negative number.
23. Show the subtraction problem on a number line, and give the answer.
a. 3 – 5
b. 3 – (-5)
c. -3 – 5
d. -3 – (-5)
e. -3 – (-3)
24. Write three addition problems that have a sum of 5.
25. Write three addition problems that have a sum of -7.
26. Write three addition problems that have a sum of 0.
Homework
27. Show the addition problem on a number line, and give the answer.
a. -6 + (-4)
b. -6 + 4
c. 6 + 4
d. 6 + -4
e. 6 + -6
28. Show the subtraction problem on a number line, and give the answer.
a. 7 – 2
b. 7 – (-2)
c. -7 – 2
d. -7 – (-2)
e. -7 – (-7)
29. Write three addition problems that have a sum of -1.
30. Write three addition problems that have a sum of 10.
31. Write three addition problems that have a sum of -3.
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Multiplication and Division of Integers
Classwork
32. Show and solve the following multiplication problems on a number line:
a. 3(3) =
b. 2(-3) =
c. 5(-2) =
33. (7)(-2) =
34. (8)(-3) =
35. (-8)(7) =
36. (6)(8) =
37. (3)(-7) =
38. (1)(7) =
39. (0)(-9) =
40. Show the following division problems on a number line:
a. 10 ÷ 2 =
b. -12 ÷ 3 =
c. -9 ÷ 3 =
41. -45 ÷ 5 =
42. 56 ÷ 8 =
43. -12 ÷ -6 =
44. 7 ÷ -7 =
45. -9 ÷ 1 =
46. -6 ÷ -6 =
47. 0 ÷ -4 =
48. -18 ÷ -9 =
49. 27 ÷ 9 =
Homework
50. Show and solve the following multiplication problems on a number line:
a. 2(3) =
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b. 3(-2) =
c. 4(-3) =
51. (-1)(-8) =
52. (1)(-2) =
53. (-7)(8) =
54. (9)(1) =
55. (-6)(3) =
56. (2)(-5) =
57. (0)(-5) =
58. (7)(-3) =
59. (-8)(-2) =
60. 5 ÷ -1 =
61. 24 ÷ 4 =
62. -3 ÷ -3 =
63. 0 ÷ 3 =
64. -10 ÷ 2 =
65. -6 ÷ 3 =
66. -40 ÷ -8 =
67. -4 ÷ 2 =
68. -25 ÷ -5 =
Addition and Subtraction of Rational Numbers
69. Explain the absolute values approach to solving a problem adding and positive and a negative
number.
70. Find the sum.
a. 2.3 + (-4.8) =
b. -6 + 4 =
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c. -10.9 + (-10.9) =
d. -8.23 + 8.23 =
e. -3 + 0 =
f.
2
1
 5  (4 ) =
3
2
g. -7 + 10 =
h. -40.32 + (-25) =
i.
525
+ (-110) =
5
j.
During a football game the Hawks lost 5 yards due to a penalty and 6 yards from a
quarterback sack. Write and solve an expression that represents the situation.
k. Isaiah is scuba diving 30 feet below sea level. If he ascends 25.8 feet, what is his new
position?
l. Joe’s bank account statement stated he had $-250.30 in his account. If Joe deposited $100
on Friday and then later took out $27.25, what is his balance in his bank account?
m. A store has 40 IPads Wednesday morning. On Wednesday, it sells18 IPads. On Thursday it
sells 10. Friday the store receives another shipment of 30 IPads. Write an addition problem
that represents the number of IPads the store has at the end of the day on Friday. Then
solve.
71. Write three different addition problems that have a sum of:
a. 15
b. 42
c. -27
d. -3
Homework
72. Explain the absolute values approach to solving a problem adding two positives or two negatives.
73. Find the sum.
a. -7 + 2 =
b. -2.3 + (-4.8) =
c. -1 + 8 =
d.
e.
f.
g.
h.
i.
j.
k.
l.
1
5  ( 7 ) 
3
-7 + 7 =
0 + (-8.95) =
-5.86 + 1 =
-9.3 + (-9.3) =
11.5 + (-98.5) =
-34.8 + (-82.6) =
A car left home and traveled 78.2 miles South on Highway 92. The car then traveled 75.9
miles North (back toward home) on the same Highway. How far is the car from home?
A scuba diver is 3 meters below sea level. If the diver descends another 8 meters, what is
the scuba diver’s position?
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4
2
5
5
m. A hole was dug 53 feet under ground. The construction workers then dug 61 further down.
How deep is the hole?
n. Grace received $200 for her birthday on Saturday. Later that day she bought a dress for
$88.30 and shoes for 52.50. On Sunday morning gave her a late birthday present of $30.
Write an addition expression that represents how much money Grace has on Sunday. Then
solve.
74. Write three different addition problems that have a sum of:
a. -12
b. 5
c. -20
d. 33
Turning Subtraction into Addition
Classwork
75. Decide whether the statements below are always true, sometimes true, or always false. Give
examples to support your answer.
a. The difference when a negative number is subtracted from a positive number is a negative
number.
b. The difference when a negative number is subtracted from a negative number is a negative
number.
76. Convert the following subtraction problems into addition problems, then find the sum.
a. 12 – (-2)
b. -5.8 – (-2.9)
c. -12 – 3
d. 10.75 – 14
e.
3
1
 15  (7 )
8
2
f.
g.
h.
i.
j.
k.
-2½ – 5
5.6 – (-4.72)
-100 – (-99)
-30.6 – 30.6
45 - (-45)
-175 – 30
77. Write three subtraction problems that have a difference of:
a. 4
b. 17
c. -19
d. -2
Homework
78. Convert the following subtraction problems into addition problems, then find the sum.
a. -5 – (-4) =
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b. -11.9 – 5.1 =
c. -3 – 5 =
d. -7.2 – (-2) =
e.
1
1
5 9 =
4
3
f.
g.
h.
i.
j.
k.
l.
3.12 – (-3.12) =
-2.4 – (-2.4) =
7 – (-10) =
9 – (-2½ ) =
50 – (-25) =
-35.7 – 20.4 =
-100 – 99 =
79. Write three subtraction problems that have a difference of:
a. 14
b. -22
c. -9
d. 23
Adding and Subtracting Rational Numbers Review
Classwork
80. 3.8 + (-8.5) =
81. 6 – (-4) =
82. (-9) – (-4) =
83. 7
2
1
5
5
3
84. -4.6 – (-2.6) =
85. -4 -10 =
86. 6
4
2
5 
7
7
87. -2 -7.8 =
88. -9 + 10 =
89. 8.65 + (-10) =
90. 2 – (-10.3) =
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3
1
 (2 ) 
4
4
1
3
92.  5  10 
8
8
91. 8
93. 4½ + 1½ =
94. 0 – (-3.8) =
95. -8 – (-2) =
96. -5 + (-6) =
97. 52
3
1
 (28 ) 
4
2
98. -41.3 + 53.2 =
99. 14
2
1
 (94 ) 
5
5
100.
-88.88 – (-44.44) =
101.
5
1
 71  21 
8
4
102.
38 + (-64) =
103.
38 – (-64) =
104.
-5 – 21 =
105.
The hottest temperature ever recorded in Houston, Texas was 104 degrees. The coldest it has
ever been is 30 degrees below zero. How many degrees difference is between the hottest and
coldest recorded temperature?
106.
Find the difference between the top of a house 55.12 feet above sea level and a coral reef 20.34
feet below sea level.
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107.
John owed his friend $7. For his birthday John received 10 dollars. After paying his friend back,
how much money will John have?
108.
Henry spent $32.44 on a shirt and another $45 on a tie. Write and solve a subtraction equation
that represents the situation.
109.
The temperature in the morning was -3 degrees. By the afternoon the temperature dropped 23
degrees. What is the temperature in the afternoon?
110.
After Enrico withdrew $90 from his bank account, his balance was $354. Write a subtraction
expression to show your balance before Enrico’s withdrawal. Solve.
Homework
111.
-8 + 6 =
112.
-3.5 – 6.8 =
113.
-8.3 – (-2.75) =
114.
1
2
7  (10 ) 
3
3
115.
-1 + (-3) =
116.
4
2
1  ( 6 ) 
7
7
117.
-6.9 + (-1.4) =
118.
3.9 + (-6.5) =
119.
2
120.
1
1
 5  (8 ) 
4
4
121.
2.4 – (-1.8) =
122.
-1 – 8 =
123.
-10 + 10 =
124.
4½ – 9 =
125.
-2.9 + 1.24 =
2
2
 ( 2 ) 
6
6
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126.
7 – (-7) =
127.
-7 + 4 =
128.
33.8 – (-58.4) =
129.
25 + (-49) =
130.
1
3
51  55 
4
4
131.
49 + (-69) =
132.
0 – (-92) =
133.
-15.6 + 73.9 =
134.
-60 – (-58) =
135.
50 -76 =
136.
The hottest ever recorded temperature in New Jersey was 110 degrees. The coldest it’s ever
been was 34 degrees below zero. How many degrees difference is between the hottest and coldest
recorded temperature?
137.
Find the difference between the top of a basketball hoop 10.10 feet above the ground and the
end of the pole 3 feet under ground.
138.
Tara’s bank account showed -14.56 on her statement. She withdrew another 60 dollars from her
account that same day. After the withdrawal what will Tara’s bank account statement show?
139.
Tony went to an orchid with his family to pick apples. Throughout the day, Tony collected 14
apples. His brother then took 5 apples and then Tony dropped 3. Write and solve an addition
equation to represent how many apples Tony has at the end of the day.
140.
Mike earned $32 mowing his neighbor’s yard. Mike also owed his brother $40. Write and solve
an equation that shows Mike’s money situation.
141.
During a football game the Giants gained 15 yards on one play. The next play the quarterback
was sacked and loss 6 yards. During these two plays how many yards did the Giants loos or gain?
142.
The temperature at 3 a.m. was 7 degrees. By 12 p.m. the temperature dropped 19 degrees.
What was the temperature at 12 p.m.?
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Multiplying Rational Numbers
Classwork
143.
(-2.5)(-2.1) =
144.
(8.5)(-9.4) =
145.
(-4.79)(-1) =
146.
(-7.12)(8) =
147.
(8.45)(-6) =
148.
(1.001)(-1.1) =
149.
(-9.75)(-5) =
150.
(4.21)(-9.2) =
151.
(1)(-5.786) =
152.
1 1
5 (6 ) 
3 2
153.
1
1
2 ( 1 ) 
4
3
154.
5
 7 ( 0) 
8
155.
2
1
 6 ( 4 ) 
5
4
156.
1
 16 (10) 
8
157.
4
 3(15 ) 
8
158.
(-33)(-13) =
159.
(-77)(4) =
160.
(20)(-40) =
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Homework
161.
(-5.21)(-5.3) =
162.
(-9.12)(-7) =
163.
(-5.8)(3.1) =
164.
(4.87)(-1) =
165.
(4.4)(4.4) =
166.
(-2.86)(9.2) =
167.
(9.3)(-9.3) =
168.
(-6.2)(-9.1) =
169.
(6.34)(2) =
170.
1 3
 6 (4 ) 
5 4
171.
1
2
 4 (5 ) 
5
3
172.
2
 62 (51) 
5
173.
2
13 (60) 
3
174.
1
1
36 (8 ) 
2
6
175.
3
4 ( 80) 
8
176.
(-10)(45) =
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Dividing Rational Numbers
Classwork
177.
3.5 ÷ -0.5 =
178.
-5.525 ÷ 8.5 =
179.
-63.84 ÷ -9.12 =
180.
-36.9 ÷ 9 =
181.
6.6 ÷ -3.3 =
182.
-40.8 ÷ -5.1 =
183.
-1.63 ÷ -1.63 =
184.
0 ÷ -13.24 =
185.
-61.992 ÷ 7.2 =
186.
1
3
 20  (6 ) 
4
4
187.
1
1
56  (6 ) 
4
4
188.
1
3
26  (4 ) 
4
8
189.
4
 15  (4 ) 
5
190.
1
3
27  (13 ) 
2
4
191.
1
 26  (4 ) 
2
192.
-4230 ÷ -90
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Homework
193.
49.2 ÷ -8.2 =
194.
-78.72 ÷ 6 =
195.
-2.4 ÷ -4 =
196.
0.128 ÷ 3.2 =
197.
-1.53 ÷ 51 =
198.
-1.92 ÷ -1.92 =
199.
6.64 ÷ -8
200.
57.6 ÷ -8 =
201.
3
 5  (4) 
5
202.
2
2
 14  (3 ) 
3
3
203.
204.
3
1
24  (8 ) 
8
8
3
35  (4 ) 
8
205.
1
1
 5  ( 2 ) 
2
4
206.
20÷ -6 =
207.
-212 ÷ -53 =
208.
4050 ÷ 75 =
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Converting Rational Numbers to Decimals
Classwork
Convert each Rational Number to Decimal Form.
209.
210.
211.
212.
4
9
213.
 11
1
6
214.
6
3
8
215.
4
220.
 23
221.
2
222.
5
6
21

3
4
5
8
1
3
2
11
Homework
Convert each Rational Number to Decimal Form.
216.
217.
218.
219.
5
6
4
15

1
9
7
8
3
4
3
8
2
6
7
11
Exponents
Classwork
223.
224.
225.
226.
227.
228.
Homework
229.
(-9)2
230.
-92
231.
-43
232.
(-4)3
233.
-64
234.
(-6)4
(-8)2
-82
-73
(-7)3
-54
(-5)4
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Numbers and Operations Unit Review
PMI 7th Grade
Name ________________________
Multiple Choice– Choose the correct answer for each question. No partial credit will be given.
1. What is the opposite of 5?
a) 5
b) -5
c) 0
1
2. What is │23 │?
4
a)
b)
1
234
1
-234
c) 0
3. What is │-7│?
a) 7
b) -7
c) 0
4.
5.
6.
-11
a) >
-10
-20.0
a) >
-19.9
-9
a) >
-9 ¼
b) =
c) <
b) =
c) <
b) =
c) <
7. Convert the subtraction problem into an addition problem.
a) -10 + 5
b) -10 + (-5)
c) 10 + 5
d) 10 + (-5)
10 – (- 5)
8. Convert the subtraction problem into an addition problem.
a) -8.75+ 4.3
b) -8.75 + (-4.3)
c) 8.75 + 4.3
d) 8.75 + (-4.3)
8.75 – 4.3
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9. Name the two numbers that have 10 as their absolute value _________________
In 17-18, use a number line to illustrate the given problem.
10. -6 + 7
11. 9 + -3
12. Convert the fraction into a decimal. Show all work.
2
9
9
13. Mike had a balance of $175 in his bank account at the start of the week. He withdrew $65.00 on
Monday, $43.25 on Wednesday, and $56.45 on Thursday. On Friday he deposited $165.30.
 At the end of the week, does Mike have more or less money in his savings account than he
had at the beginning of the week?
 How much more or less?
 Show all of your work to support your answers.
14. In the first quarter of the game, the Giants gained 5 yards, lost 13 yards, gained 2 yards, gained 6
yards and, unfortunately, lost 12 yards in their final play.
 Use a number line to depict the Giants’ activity in the first quarter.
 Use addition only to illustrate the Giants’ activity in the first quarter.
 What was the net yardage for the Giants in the first quarter?
15. The temperature varied greatly throughout the evening. Mary’s bug farm cannot survive if the
temperature falls below 32°C at any time. The evening temperature was consistently 62 degrees, until
a storm passed through the town. The temperature dropped 24°, dropped another 5°, rose 2°,
dropped 11°, and rose 9°.
 Illustrate the temperature changes throughout the night using only addition
 What was the lowest temperature of the night?
 Did the bug farm survive the night? Explain your answer.
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Answer Key
1.
2.
3.
4.
5.
For example: 3, 4, 5, -2, -2
For example: ½, -3/4, 0.4, √5, π
-20
13.5
16.
a. -72, 72
c. -155.35, 155.35
d. -2500, 2500
17. Answers will vary.
a. 12
1
3
b.
25
c.
47.27
d.
11
18.
5
7
6.
a. -150, 150
b. -75.47, 75.47
c.
1
2
7
e. -4
-7
-10.3
-11
=
-15
7
˂
0
2
5
-100.1
0
-1
1
1
, 0, 7.8, 11, 12 , 15.2
2
3
-9.25, -8
1
2
1
, -3, -1, 0, 1, 9.5
3
21.
a.
b.
c.
d.
e.
5.3
6
2
-2
-6
0
22.
a. Always true
b. Sometimes true
c. Always true
23.
13
a. -2
b. 8
c. -8
d. 2
e. 0
24. Answers will vary
25. Answers will vary
26. Answers will vary
27.
a. -10
b. -2
2
9
b. 35.74
c. 55
d.
2
5
-15
20. Order on number line:
50
-11.3
-2
7.98
a.
-25
-30.3
-9, -3
1
-15.1, -3.8, -1.2, 0, 4, 7 , 9
2
11.
12.
13.
14.
15.
˃
=
d. -99.8
˃
e. -5.75
˂
f. 0
˃
19. Order on number line:
=
f. 0
˂
9. Order on number line:
-7, -4.1, -2.7, 0, 1.8, 4.3, 5
10. Order on number line:
a. 25
b. -30.3
c.
1
1
 14 ,14
2
2
d. -1250.3, 1250.3
7. Answers will vary.
8.
a. 3
˃
b. -8.75
˃
c. 12
˃
d.
1
1
 28 ,28
4
4
b.
3
1
2
NJ Center for Teaching and Learning
~ 20 ~
www.njctl.org
c. 10
d. 2
e. 0
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
a. 5
b. 9
c. -9
d. -5
e. 0
Answers will vary
Answers will vary
Answers will vary
a. 9
b. -6
c. -10
-14
-24
-56
48
-21
7
0
-9
7
2
-1
-9
1
0
2
3
-2.5
-2
-21.8
0
-3
f.
-10
d. -1
8
-2
-56
9
-18
-10
0
-21
16
NJ Center for Teaching and Learning
1
6
2
3
e. 0
f. -8.95
g. -4.86
h. -18.6
i. -87
j. -117.4
k. 2.3 miles
l. -11
m. 115 feet deep
n. $89.20
74. Answers will vary
75.
a. Always false
a. 6
b. -6
c. -12
51.
52.
53.
54.
55.
56.
57.
58.
59.
a.
b.
c.
d.
e.
g. 3
h. -65.32
i. -5
j. -5 + -6= -11
k. -4.2
l. -77.55
m. 40+ (-10)+ (-18) + 30 = 42
71. Answers will vary
72. Answers will vary
73.
a. -5
b. -7.1
c. 7
a. 5
b. -4
c. -3
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
-5
6
1
0
-5
-2
5
-2
5
Answers will vary
~ 21 ~
www.njctl.org
b. Sometimes true
93.
94.
95.
96.
76.
a.
b.
c.
d.
12 + 2 = 14
-5.8 + 2.9 = -2.9
-12 + (-3) = -15
10.75 + (-14) = -3.25
e.
3
1
7
 15  (7 )  7
8
2
8
f.
-2½ + (-5) = −7
97. 24
1
1
1
4
3
12
f. 3.12 + 3.12 = 6.24
g. -2.4 + 2.4 = 0
h. 7 + 10 = 17
i.
79.
80.
81.
82.
9 + 2½ = 11
1
2
j. 50 + 25 = 75
k. -35.7 + (-20.4) = -56.1
l. -100 + (-99) = -199
Answers will vary
-4.7
10
-5
83. 2
1
15
84. -2
85. -14
86. 1
87.
88.
89.
90.
91.
2
7
-9.8
1
-1.35
12.3
11
92. -15
99. 108
3
5
100.
-44.44
101.
-50
102.
103.
104.
105.
106.
107.
108.
109.
110.
111.
112.
113.
-26
102
-26
134
75.46
3 dollars
-32.44 – 45 = -77.44
-26
354 – (-90) = 444
-2
-10.3
-5.55
114.
-3
115.
-4
116.
7
117.
118.
119.
120.
121.
122.
123.
-8.3
-2.6
0
3
4.2
-9
0
124.
-4
125.
126.
127.
128.
129.
-1.66
14
-3
92.2
-24
130.
-4
131.
132.
-20
92
2
1
1
2
NJ Center for Teaching and Learning
1
4
98. 11.9
g. 5.6 + 4.72 = 10.32
h. -100 + 99 = -1
i. -30.6 + (-30.6) = -61.2
j. 45 + 45 = 90
k. -175 + (-30) = -205
77. Answers will vary
78.
a. -5 + 4 = -1
b. (-11.9) + (-5.1) = -17
c. -3 + (-5) = -8
d. -7.2 + 2 = -5.2
e. 5 + (−9 )= −4
6
3.8
-6
-11
~ 22 ~
3
8
1
3
6
7
1
2
1
2
www.njctl.org
133.
134.
135.
136.
137.
138.
139.
140.
141.
142.
143.
144.
145.
146.
147.
148.
149.
150.
151.
58.3
-2
-26
144
13.1
-45.44
14 + (-5) + (-3) = 6
32 – 40 = -8
9 yards gained
-12 degrees
5.25
-79.9
4.79
-56.96
-50.7
-1.1011
48.75
-38.732
-5.786
152.
34
2
3
153.
154.
-3
0
155.
1
27
5
156.
161
157.
1
4
1
-46
2
158.
159.
160.
161.
162.
163.
164.
165.
166.
167.
168.
169.
429
-308
-800
27.613
63.84
-17.98
-4.87
19.36
-26.312
-86.49
56.42
12.68
170.
-29
171.
9
20
4
23
5
NJ Center for Teaching and Learning
~ 23 ~
172.
-3182.4 or -3182
173.
-820
174.
-298
175.
176.
177.
178.
179.
180.
181.
182.
183.
184.
185.
186.
187.
188.
-350
-450
-7
-0.65
7
-4.1
-2
8
1
0
-8.61
3
9
-6
189.
3
190.
-2
191.
5
192.
193.
194.
195.
196.
197.
198.
199.
200.
47
-6
-13.12
0.6
0.04
-0.03
1
–0.83
-7.2
201.
1
202.
203.
204.
4
-3
-8
205.
2
206.
207.
208.
4
54
209.
0. 44
2
5
1
12
1
8
7
9
2
5
4
9
 3. 3
www.njctl.org
210.
211.
 6.16 6
221.
21.375
222.
223.
224.
225.
226.
227.
228.
229.
230.
231.
232.
233.
234.
 0.18
212.
213.
214.
-11.75
6.625
215.
 4.33
216.
0.833
217.
218.
219.
220.
 4.11
15.875
 0.636
-23.75
Unit Review Answer Key
1) B
2) A
3) A
4) C
5)
6)
7)
8)
C
A
C
D
2.375
 5.33
64
-64
-343
-343
625
-625
81
-81
-64
-64
1296
-1296
9) 10, 10
10)
11)
12)
13)
14)
15)
.922
More, $0.60
5 + (-13) + 2 + 6 + (-12), -12 yards
62 + (-24) + (-5) + 2 + (-11) + 9
Lowest temp in the night was 24 degrees. The bug farm did not survive the night since
the temp did drop below 32 degrees at one point.
NJ Center for Teaching and Learning
~ 24 ~
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