Practice Lesson Quiz 1-1

Which of these situations can be represented by the opposite of –35? Select all that apply.

• A temperature of 35 degrees below zero
• A debt of 35 dollars
• An elevation of 35 feet above sea level
• A gain of 35 points in a game

Answer explanation

The opposite of -35 is 35. Look for POSITIVE keywords like "above" and "gain".

Tags

7.NS.A.1a

The number line represents Allie’s scores in the first three rounds of a card game.
Use the drop-down menus to explain Allie’s gains and losses in the game.
Allie ​ (a)   ​​​ points in the first round of a card game. In the second round, she​ (b)   points. Then she ​ (c)   points in round 3.

• gains 4
• loses 6
• gains 4
• loses 4

Kristen goes on a cave tour with her family. They climb down to 12 meters below ground level.
Then they climb the opposite of –12 meters to return to ground level.
How many meters did they climb in all?

Answer explanation

In this case the question is asking for DISTANCE. Distance is always positive so we add 12 + 12 for a total of 24 meters.

Mike says the opposite of 10 is –10 and the absolute value of 10 is –10. Is he correct? Mike (a)   .   ​ (b)   combine to make zero.   ​ (c)     is the distance from zero.

• is not correct
• Opposite values
• Absolute value
• is correct

On Friday, the temperature was 92°F. The temperature changed by –4°F on Saturday, and then it changed by 8°F on Sunday.
What was the temperature on Sunday? How did the temperature change?

• 96°F, increased by 4°F
• 90°F, decreased by 2°F
• 88°F, decreased by 4°F
• 96°F, increased by 8°F

What are Integers?

Answer explanation

Integers are whole numbers and their opposites (does NOT contain fractions or decimals)

What are rational numbers?

Answer explanation

Any number that can be expressed as a fraction that must be either TERMINATING or REPEATING decimals.

What are irrational numbers?

Answer explanation

Any number that cannot be written as either a terminating or repeating decimal.

What is absolute value?

Answer explanation

A number's distance from zero.