+ and -
-3 + -4
-7
56
At 7:00 a.m., the temperature was −3°C. By noon, it had increased by 8°C.
What was the temperature at noon?
5°C
A submarine descends 2 meters each minute for 4 minutes.
What is the submarine's total change in position?
−8 meters
A submarine is 4 meters below sea level. It rises 2 meters and then rises another 3 meters.
What is the submarines final position?
1 meter above sea level
-15 + 8
7
-28 / 4
-7
Maya owes her brother $6. She pays him back $2.50.
Represent the amount Maya still owes as a rational number.
−$3.50
A temperature increases 12°C in 6 hours.
What is the change in temperature each hour?
+2°C
A bank account has a balance of $20. You spend $6, then deposit $4, and then spend $3.
What is the new balance?
$15
-9 - 8
-17
-8 * -9
72
A submarine is 12.5 meters below sea level. It rises 7.5 meters, then dives 3 meters.
What is the submarine's final position relative to sea level?
−8 meters
A diver is 12 meters below sea level. She rises at a rate of 3 meters per minute.
How many minutes will it take her to reach sea level?
4 minutes
A submarine is 6 meters below sea level. It rises half of its distance to sea level, then descends 2 meters.
What is the submarine's final position?
−5 meters
-20 - (-50)
70
121 / 11
11
During a game, a team gains 4.5 points in the first round, loses 6.75 points in the second round, and gains 2.25 points in the third round.
What is the team's total change in points?
0 points
$5
Jordan has $18 in his bank account. He spends $6 on lunch and then gets paid $12. He splits the money he has left equally between 3 savings jars.
How much money goes into each jar?
$8
-2 + 5 - (-9)
12
-10 * -5 * -3
-150
A hiker is 2.5 miles below the top of a mountain. She climbs 1.75 miles, then descends 0.25 mile, and finally climbs 0.5 mile.
What is her final position relative to the top of the mountain?
0.5 mile below the top
A hiker starts at 6 miles above sea level. She descends at a rate of 1.5 miles per hour for 2 hours. She then climbs at a rate of 0.5 mile per hour for 3 hours.
What is her final elevation?
4.5 miles above sea level
A game starts with a score of −10 points. A player earns 18 points, then loses 6 points. At the end of the game, the final score is doubled because of a bonus round.
What is the player's final score?
4 points