AnswersPre-Algebra - MA3119 A Distance LearningMultiplying Integers

Multiplying Integers Answers

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How is the product of 2 and –5 shown on a number line?

A
A number line going from negative 10 to positive 10. An arrow goes from 0 to 5 and from 5 to 10.
Option A
B
A number line going from negative 10 to positive 10. An arrow goes from 10 to 5 and from 5 to 0.
Option B
C
A number line going from negative 10 to positive 10. An arrow goes from negative 10 to negative 5 and from negative 5 to 0.
Option C
D
A number line going from negative 10 to positive 10. An arrow goes from 0 to negative 5 and from negative 5 to negative 10.
Option D
2
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Clara multiplies and gets 42. Is her answer reasonable?

Question illustration
A
No, because the solution should have a negative answer.
B
No, because the solution should have a positive answer.
C
Yes, because the solution should have a negative answer.
D
Yes, because the solution should have a positive answer.
3

What is the product of any integer and –1?

A
The product is the opposite of the integer.
B
The product is the integer unchanged.
C
The product is positive.
D
The product is negative.
4

How is the product of 3 and 2 shown on a number line?

A
A number line going from negative 7 to positive 7. An arrow goes from 0 to 3 and from 3 to 6.
Option A
B
A number line going from negative 7 to positive 7. An arrow goes from 6 to 3 and from 3 to 0.
Option B
C
A number line going from negative 7 to positive 7. An arrow goes from negative 6 to negative 3 and from negative 3 to 0.
Option C
D
A number line going from negative 7 to positive 7. An arrow goes from 0 to negative 3 and from negative 3 to negative 6.
Option D
5

Bobby’s football team received four five-yard penalties in the first quarter, which meant his team lost yardage in their progress toward the goal line. If the team started at the 45-yard line and ended at the 25-yard line, what was the change in their progression down the field as a result of these penalties?

A
–20 yards
B
–5 yards
C
5 yards
D
20 yards
6

What is the product of –5 and –8?

A
–40
B
–13
C
13
D
40
7

Which shows two expressions that are equivalent to ?

Question illustration
A
and
Option A
B
and
Option B
C
and
Option C
D
and
Option D
8

Laurie was scuba diving. Each time she dove 5 feet deeper, she would stop and clear her ears. Each time that this totaled 20 feet deeper, she would stop and check her instruments to make sure they were working properly. After Laurie had checked her instruments 3 times, she was at her maximum depth. Which expression best represents Laurie’s maximum depth?

A
(4) (negative 5) (3)
Option A
B
(Negative 4) (Negative 5) (Negative 3)
Option B
C
(Negative 5) (20) (3)
Option C
D
(Negative 5) (Negative 20) (Negative 3)
Option D
9

Which shows two expressions that are equivalent to ?

Question illustration
A
and
Option A
B
and
Option B
C
and
Option C
D
and
Option D
10

Yan is climbing down a ladder. Each time he descends 4 rungs on the ladder, he stops to see how much farther he has to go. If Yan made 8 stops with no extra steps, which expression best shows another way to write the product of the number of ladder rungs that Yan climbed?

A
4 + 4 + 4 + 4
Option A
B
8 + 8 + 8 + 8
Option B
C
(Negative 1) (4 + 4 + 4 + 4)
Option C
D
(Negative 8) + (negative 8) + (negative 8) + (negative 8)
Option D

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