Answers Pre-Algebra - MA3119 A Distance LearningAdding Integers

Adding Integers — Unit test Answers

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The Nash family spent a total of $240 on a hotel room for 3 nights. Which equation can be used to find c, the average cost per night for the hotel room?

c times 240 = 3

c divided by 240 = 3

240 times 3 = c

240 divided by 3 = c

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Katrina's mother is 2 inches shorter than her father, Katrina is 2 inches shorter than her mother, and Katrina's brother is 2 inches shorter than Katrina. Which best represents the change in height from Katrina's father to her brother?

–8 inches

–6 inches

6 inches

8 inches

How is the product of 2 and –5 shown using integer tiles?

2 positive tiles and 5 negative tiles.

2 negative tiles and 5 positive tiles.

5 negative tiles and 5 negative tiles.

5 positive tiles and 5 positive tiles.

The position of a swimmer below sea level is represented by –5 meters. The diver descends an additional 3 meters below sea level. Which expression describes the new position of the diver?

Negative 5 + (negative 3)

Negative 5 + 3

5 + (negative 3)

5 + 3

Which expression is modeled by this arrangement of tiles?

30 divided by (negative 30)

30 divided by (negative 3)

30 divided by 3

30 divided by 30

Jillian is using integer tiles to add . She uses the steps below.Step 1Step 2Step 3Step 4Jillian has made an error. In which step does it occur?

Step 1

Step 2

Step 3

Step 4

Which tiles should be added to the model below to make zero?

6 negative tiles

6 positive tiles

3 negative tiles and 3 positive tiles

6 negative tiles and 6 positive tiles

Helene, a hiker, starts at an elevation of 27 feet above sea level and descends 32 feet during her hike to base camp. Which describes the elevation of base camp?

5 feet above sea level

5 feet below sea level

59 feet above sea level

59 feet below sea level

Which point on the number line represents the product ?

Point A

Point B

Point C

Point D

At 4 p.m., the temperature started to change drastically. Each hour, for three hours, the temperature decreased by 7°F. Which word in the problem indicates that a negative integer should be used?

change

each

decreased

drastically

How do the expressions and compare when they are evaluated?

They have different values and are different signs.

They have different values but are the same sign.

They have the same value but are different signs.

They have the same value and the same sign.

Vicky records the low temperature for three consecutive days. Between the first and second days the temperature increased 6 degrees. Between the second and third days the temperature decreased 3 degrees. On the third day the low temperature was –6º. What was the low temperature on the first day?

–15 degrees

–9 degrees

–3 degrees

3 degrees

Antwan determines the distance between the points –7 and 2 on a numberline. Maggie determines the difference between the numbers –7 and 2. How are Antwan’s and Maggie’s solutions related?

Maggie’s solution is the absolute value of Antwan’s solution.

Antwan’s solution is the absolute value of Maggie’s solution.

Both solutions are greater than either of the two numbers in the problem.

Both solutions are less than either of the two numbers in the problem.

Kale is hiking 2,345 feet above sea level. The peak of the mountain he is climbing is 3,283 feet above sea level. What is the vertical distance between Kale and the mountain peak?

938 feet

942 feet

1,142 feet

5,628 feet

What is the solution to ?

–8

–6

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Adding Integers — Unit test Answers

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