The temperature fell a total of 12oF in 4 hours. How much did it change each hour?
-3oF
5x + 10x =
15x
5k – 15k
–10k
- 1 × (-4)
4
-10 ÷ 2 =
-5
A football team lost 3 yards on each of the 4 plays they ran. What was their overall change in yards?
-12 yards
-37 + (-13) =
(-50)
9 - (-20)=
29
8 × (-4)
-32
27 ÷ -3
-9
Ms. Yang saves $50, then spends $120 on her credit card. What is her net worth?
–$70
(-15) + 15 =
0
-97 - (-82) =
–15
-12 × (-5)=
60
–48 ÷ –6
8
Ms. Yang invents a time machine. She travels forward in time by 5 days, was horrified by what she saw, then travels back in time by 15 weeks to avoid it. How long ago did she end up?
100 days ago
2x + 5 +10x + 4
12x + 9
3t – 9t + 5
–6t + 5
9 × (-6) =
-54
-120 ÷ -40 =
3
You are hiking on a mountain and start at an elevation of 25 feet. You descend 30 feet. You ascend 20 feet. You descend 40 feet. You ascend 10 feet. What is your ending elevation?
-15 feet
3a + 3 + 5b + 10a + b
13a + 6b + 3
3m – 6 – 5m + 18
–2m + 12
-6 × (-30)
180
-350 ÷ 50 =
-7