AnswersSS-Math 7Integers and the Number Line

Adding Integers Answers

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Bernita and Derek each plot a number on a number line. The numbers are unique but have the same absolute value. The sum of the absolute values of the numbers is 150. What are the two numbers?

A
0 and 150
B
–75 and 75
C
–150 and 150
D
–300 and 300
2
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Jalen plots two integers on a horizontal number line. The leftmost integer is negative. Which must be true of the second integer?

A
The second integer is negative.
B
The second integer is positive.
C
The second integer is greater than the first integer.
D
The second integer is less than the first integer.
3

Which situation is best represented using a negative integer?

A
a deposit of $35 into a bank account
B
the temperature decreasing by 18º
C
an additional 5 gallons of gas being put into a car
D
a student reading today for 20 minutes longer than yesterday
4

What is the absolute value of –6? Use the number line to help answer the question.

Question illustration
A
–7
B
–6
C
6
D
7
5

Which number line plots the integers –6, –2, and 5?

A
A number line going from negative 6 to positive 6. Points are at negative 6, negative 5, negative 2.
Option A
B
A number line going from negative 6 to positive 6. Points are at 2, 5, 6.
Option B
C
A number line going from negative 6 to positive 6. Points are at negative 5, 2, 6.
Option C
D
A number line going from negative 6 to positive 6. Points are at negative 6, negative 2, 5.
Option D
6

Ingrid spends $120 on car repairs. Which integer represents the amount of money Ingrid must earn in order to create a zero pair?

A
–240
B
–120
C
120
D
240
7

Jessica increases the temperature of a block of ice by 20º. Which integer represents the amount by which Jessica must change the temperature for the block of ice to return to its starting temperature?

A
–40
B
–20
C
20
D
40
8

Brandie lives on the twelfth floor of her apartment building. She walks up 2 flights to visit a friend and then up 3 more flights to deliver a message to a neighbor. Which integer best represents the number of flights Brandie has walked?

A
–12
B
–1
C
5
D
7
9

Which number line plots the integers –8, –4, and 11?

A
A number line going from negative 12 to positive 12. Points are at negative 8, negative 4, and 11.
Option A
B
A number line going from negative 12 to positive 12. Points are at negative 10, negative 4, 11.
Option B
C
A number line going from negative 12 to positive 12. Points are at negative 4, negative 2, and 11.
Option C
D
A number line going from negative 12 to positive 12. Points are at negative 4, negative 2, and 13.
Option D
10

Javier writes an integer on a piece of paper. The absolute value of his number is less than 4. Which is true of the possible values of Javier’s number?

A
The possible values are less than 4.
B
The possible values are less than –4.
C
The possible values are less than 4 but greater than –4.
D
The possible values are either greater than 4 or less than –4.

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