Topic 1: Rational Number Operations

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

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

Allie ​ (a)   points in the first round of the card game. In the second round, she ​ (b)   points. After the first two rounds, she has ​ (c)   points.

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... ​ ​ (a)  

1.789 ​ (b)  

0.9999... ​ (c)  

6.25 ​ (d)  

Which subtraction expression does the number line show?

The temperature in Anchorage, Alaska, was -3°C in the afternoon. After the sun went down, the temperature dropped 6 degrees. Write an equation to represent the situation.

Rob borrows $15.00 from his father, and then he borrows $3.00 more. How much money does Rob owe his father?

Select all the sums that are positive.

Sandra plays a matching game. In order to advance to the next level, she must score at least 10 points. She scores 18 points for correct matches and -6 points for incorrect matches. Did Sandra make it to the next level?