Mystery
Rewrite the expression:
8 - (-3)
8 + 3
Solve:
6 + 7 =
13
Solve:
6-5 =
The temperature outside is 5°F. Overnight, it drops 8°. What is the new temperature?
Equation: 5+(−8)5 + (-8)5+(−8)
Answer: -3°F
A submarine is 10 feet below sea level. It dives 4 more feet. What is its new depth?
Equation: −10+(−4)-10 + (-4)−10+(−4)
Answer: -14 feet
Rewrite & Solve:
7-(-2)
7 + 2 = 9
Solve:
(-6) + (-6)
-12
Solve:
18 - 26
-8
A scuba diver is 18 feet below sea level. The diver swims up 7 feet. What is the new depth?
Equation: −18−(−7)-18 - (-7)−18−(−7)
Answer: -11 feet
A hiker is 12 feet below the top of a canyon (represented by -12). They climb 15 feet. Where are they now?
Equation: −12+15-12 + 15−12+15
Answer: 3 feet above the reference point
Rewrite and Solve:
-5-3 =
-5 + (-3) = -8
Solve:
(-2) + 2
0
Solve:
-14 - 23
-37
A football team starts at the 20-yard line. They lose 8 yards on one play. Where is the ball now?
Equation: 20+(−8)20 + (-8)20+(−8)
Answer: 12-yard line
The temperature is -5°F. It increases by 8°.
Explain why your answer is positive or negative.
Equation:
−5+8-5 + 8−5+8
Answer: 3°F
Explanation: The increase of 8 is greater than the starting value of -5, so the temperature ends above zero.
Rewrite and solve:
-2-(-16)
-2 + (16) = 14
Solve:
(-8) + 6 =
-2
Solve:
30 - (-45)
75
A bank account has a balance of -$25. A fee of $10 is charged. What is the new balance?
Equation: −25−10-25 - 10−25−10
Answer: -$35
Jordan owes $18. A friend forgives $12 of the debt.
What is Jordan's new balance?
Equation:
−18−(−12)
Answer: -$6