Topic 1: Lessons 1-10

Which of these situations can be represented by the opposite of -25?

• A. A scuba diver is 25 feet below sea level.

• B. Leon gets paid $25.

• C. An airplane descends 25 feet.

• D. Sara has a $25 debt.

The number line represents Allie’s scores in the first two rounds of a card game. Explain Allie’s gains and losses in the game.

Allie __________ points in the first round of the card game.

The number line represents Allie’s scores in the first two rounds of a card game. Explain Allie’s gains and losses in the game.

In the second round, she __________ points.

The number line represents Allie’s scores in the first two rounds of a card game. Explain Allie’s gains and losses in the game.

After the first two rounds, she has __________ points.

Kristen goes on a cave tour with her family. They climb down to 8 meters below ground level. Then, they climb the opposite of -8 meters to return to ground level. What is total number of meters they climbed (in either direction)?

A train is going on a journey. First, it travels east for 50 kilometers. Then, it turns north and travels for 22 kilometers. Next, it goes west for 50 kilometers. Finally, it travels south for a certain number of kilometers. At the end of its journey, it is back at its original location. How many kilometers did it travel in the southward direction?

On Friday, the temperature was 82°F. The temperature changed by -2°F on Saturday, and then it changed by 2°F on Sunday. What was the temperature on Sunday? Explain how the temperature changed using integers.

Choose whether each decimal terminates or repeats.

3.232323...

• Terminates

• Repeats

Choose whether each decimal terminates or repeats.

1.789

• Terminates

• Repeats

• Terminates

• Repeats