At 6 a.m. the temperature was 4 degrees Celsius. By noon it had fallen 9 degrees. A rise is positive. Which signed number shows the change?

A thermometer outside reads exactly 0 degrees Celsius. What does this reading mean?

A temperature of -8 degrees Celsius is written with a negative number because it is 8 degrees below zero on the scale.

A weather report gives the temperature as -3 degrees Celsius. What does the negative sign tell you?

A rise of 7 degrees is recorded as +7. Which change is in the opposite direction, and how is it recorded?

A diver is 18 meters below sea level and a gull flies 18 meters above it. Sea level is 0. Which pair of numbers gives their positions?

On an elevation map, 0 meters means sea level. What does an elevation of 0 meters tell you about a town?

A submarine sits at -250 meters. A helicopter hovers at the opposite elevation. Where is the helicopter?

A hill 40 meters above sea level is written as +40 and a valley floor 40 meters below sea level is written as -40.

A bank uses 0 dollars to mean an account is empty. What does a balance of -45 dollars mean?

Maya deposits $60 into her account, then the bank charges a $25 fee. Deposits are positive. Which pair of signed numbers records the two events?

A gift card is loaded with $18 and later charged $18. Loading money is positive. Which signed number records the charge?

A prepaid lunch account shows a balance of exactly $0. What does this balance mean?

A thermostat reads exactly 0 degrees Celsius on a cold morning. Is that reading written as a positive number, a negative number, or neither?

A football team gains 8 meters, then loses 3 meters. Gains are positive. Which signed number records the second play?

In a card game, 0 points means a player is even with the score they started with. What does a score of -7 mean?

A shop records a profit of $150 as +150. Which situation does the same shop record as -150?

A business that loses $200 in a month records the change as +200, because money amounts are always positive.

A plane flies 9,000 meters above sea level. A submarine sits 300 meters below sea level. Which signed number gives the submarine's elevation?

Elevations above sea level are written as positive numbers. Which kind of number is used for elevations measured in the opposite direction, below sea level?

A submarine is 45 meters below sea level. Which signed number represents its position?

The temperature was -3°C in the morning and 5°C in the afternoon. Which temperature is warmer?

A football team loses 8 yards on a play. Which signed number represents the change in yards?

A bank account balance is $0. Then a $12 withdrawal is made. What signed number represents the account change?

Which situation is best represented by the number +20?

A city parking garage labels levels below ground as negative numbers. Which level is two floors below ground level?

Which number has the greatest value?

A fish is 7 feet below the surface of a lake, and a bird is 7 feet above the surface. Which statement is true?

Which signed number represents a debt of $35?

A thermometer shows -10°F. What does the absolute value of -10 tell you in this context?

An elevator starts at ground level, goes down 3 floors, then goes up 3 floors. Where is it compared with ground level?

In a game, Maya's score is -5 and Leo's score is -2. Who has the higher score?

A point is 9 units to the left of 0 on a number line. What is its coordinate?

Which pair of situations is represented by +150 and -150?

A scuba diver is at -18 feet and a snorkeler is at -4 feet. Who is deeper?

A stock price change of -6 points means the stock price increased by 6 points.

A positive number can represent a deposit into a bank account.

Which situation has the lowest value?

A golfer's score for a hole is -1. What does this usually mean compared with par?

Which number best represents no gain and no loss?