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Understanding integers

p

peppermints. Riley has

4

fewer peppermints than Troy. Write an expression that shows how many peppermints Riley has.

What is the slope of the line?

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3x-4y=7

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3

4

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3

4

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4

3

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4

3

Lake Moeris in Egypt is located

\text{below sea level}

. Which number represents the elevation of Lake Moeris in meters?

In the video game Silly Sevens, players earn points finding cards that add up to seven. When a player finds cards that add up to

7

points, a message says

7

points, and the player's score increases by

7

points. If the player's cards go over seven, a message says

-7

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Which of these describes what happens to the score of a player whose cards go over seven?

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(A)It decreases by

7

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(B)It stays the same.

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(C)It increases by

7

The value of an automobile company's stock fell

5

points over the last month.

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What integer represents the change in the stock's value?

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\_\_\_\_\_

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Tisha has a game on her tablet that simulates dolphin training. Her score increases by

5

points each time she teaches a dolphin a new trick. What integer represents the change in Tisha's score when she teaches a dolphin a new trick?

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\_\_\_

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Danny received some shares of stock in a video game company for his birthday. Yesterday, the value of the stock rose

5

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What integer represents the change in the stock's value?

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\_\_\_\_

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The freezing point of pure water is

0 \, ^{\circ}\mathrm{C}

, but adding salt to water changes its freezing point. During a science experiment, Patrick finds a solution of salt water that has a freezing point of

-6 \, ^{\circ}\mathrm{C}

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Which of these describes the freezing point of the salt water?

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(A) colder than pure water's freezing point

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(B) warmer than pure water's freezing point

When the value of Eagle Eye Banking stock fell

5

points, the change was represented online as

-5

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The next day, the change in value of the stock was represented as

3

points. Which of these describes the change in the stock's value?

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3

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(B)It neither rose nor fell.

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3

Mia owns stock in the clothing company her grandparents started. Yesterday, the value of the stock fell

4

points. What integer represents the change in the stock's value?

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\_\_\_\_

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An incoming weather front caused the temperature in Blue Valley to drop

8\,^\circ\mathrm{F}

. What integer represents the change in Blue Valley's temperature?

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\_\_\_\_\,^\circ\mathrm{F}

Troy has an ice hockey game on his tablet. His score increases by

5

points each time his goalie makes a save.

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What integer represents the change in Troy's score each time his goalie makes a save?

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\_\_\_\_

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Emilio owns shares of stock in the software company where he works. Last week, the value of the stock fell

6

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What integer represents the change in the stock's value?

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\_\_\_\_

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Eve is flying her new kite at the park. A gust of wind causes the kite to drop

5

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What integer represents the change in the kite's height?

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\_\_\_\_

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Tunis, the capital city of Tunisia, has an elevation of

0

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Which of these describes the elevation of Tunis?

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(A) below sea level

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(B) at sea level

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(C) above sea level

The elevation of Kristianstad, Sweden, a city founded by King Christian IV of Denmark, is

-2

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Which of these describes the elevation of Kristianstad?

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(A) below sea level

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(B) at sea level

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(C) above sea level

Tara specializes in the mile run at her team's track meets. In this morning's meet, she cut

6

seconds off her previous fastest time.

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What integer represents the change in Tara's fastest time?

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\_\_\_

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The stock value of N-ergyz, a solar-power company, rose

7

points over the last week.

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What integer represents the change in the stock's value?

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\_\_\_\_\_\_\_

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When a storm moved into Park City, the temperature dropped

5\,^\circ\mathrm{F}

. What integer represents the change in Park City's temperature?

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\_\_\_\_\,^\circ\mathrm{F}

Linseed oil, a natural oil used in paint, freezes at

-4 ^\circ\text{F}

. Which of these describes the temperature at which linseed oil freezes?

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0 ^\circ\text{F}

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0 ^\circ\text{F}

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0 ^\circ\text{F}

Each afternoon, Sanjay looks online to find the value of a stock that shares his initials: SZT. Today, the stock rose

4

points in value.

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What integer represents the change in the stock's value?

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Ocean water freezes at a temperature of

2 \, ^{\circ}\mathrm{C}

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What integer represents the freezing point of ocean water?

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\_\_\_\_\_\,^{\circ}\mathrm{C}

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8

pictures. Alexa drew

p

fewer pictures than Evan. Write an expression that shows how many pictures Alexa drew.

4

bags of beans. There are

b

beans in each bag. Write an expression that shows how many beans Patrick bought.

7

extra credit points. Susan earned

p

fewer extra credit points than Gavin. Write an expression that shows how many extra credit points Susan earned.

T=29-8a

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The temperature,

T

, in degrees Celsius, as measured by a weather balloon at an altitude of

a

kilometers from the ground is given by the equation. What is the best interpretation of

29

as shown in the given equation?

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1

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(A) The temperature on the ground is

29

degrees Celsius.

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(B) The weather balloon reaches a maximum altitude of

29

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(C) The temperature increases by

29

degrees Celsius for every kilometer increase in altitude.

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(D) The temperature decreases by

29

degrees Celsius for every kilometer increase in altitude.

Jorge is playing a dart game where each throw subtracts points from his score.

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18

points before throwing. His dart landed in a section worth

24

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What was Jorge's score after the throw?

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Carol, the band director, tracked how many minutes each saxophone player practiced last week. She found that Sven practiced for

30

minutes, Li Mihn practiced for

45

minutes, Wendy practiced for

90

minutes, Thomas practiced for

75

minutes, and Gabriel practiced for

60

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Find the mean length of practice time.

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The speed of sound at sea level is approximately

343

meters per second

\left(\frac{\mathrm{m}}{\mathrm{s}}\right)

. What is the speed of sound at sea level measured in kilometers per hour

\left(\frac{\mathrm{km}}{\mathrm{h}}\right)

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Round the answer to the nearest whole number.

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1000

meters in one kilometer and

3600

seconds in one hour.)

A particular car has a fuel efficiency of

8

liters of gasoline per

100

kilometers. What is the fuel efficiency in miles per gallon? Round to the nearest integer.

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(There are approximately

1

6

1

mile, and approximately

3

8

1

1945

2008

, one country's per capita gross domestic product (GDPPC) increased about

6 \%

per year, ending at

\$ 19,600

. For the next few years, the growth slowed to an increase of about

\$ 1,300

per year. To the nearest dollar, how much less did the GDPPC grow during the next

6

years than it would have if it had maintained its earlier growth rate?

Wilber wants to make the pond in his backyard bigger. It is currently a cone with a radius of

30

meters and a depth of

15

meters. He wants to increase the radius to

40

meters and the depth to

20

meters. How much more water will the pond hold, in thousands of cubic meters?

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(Round to the nearest thousand cubic meters.)