Find each sum.
3 + (-7)
-4
5 - 8
-3
−3 ⋅(−4)
12
-16 ÷ 5
-3.2
Cara monitors a snail in her aquarium. She notes that this morning it crawled 1” up the glass. A few hours later it crawled another 2” up the glass. Later, it crawled 4” down the glass. How far is the snail from where it started?
-1” from where it started
-10 + 12
2
-2 - (-8)
6
7(−3)
-21
-12 ÷ -8
1.5
If it is 5 degrees outside and the temperature will drop 17 degrees in the next six hours, then another 4 degrees in the following hour, how cold will it get?
-8 degrees
-12 + (-5)
-17
(-9) - 12
-21
12(-13)
-156
-108 ÷ 9
-12
A deep-sea exploring ship is pulling up a diver at the rate of 25 feet per minute. The diver is 200 feet below sea level. How deep was the diver 10 minutes ago?
-450 feet below sea level
-4 +(-8) + 11
-1
(-4) - (-8) - 2
2
-42(-9)
378
-326 ÷ -2
163
Josie has $47 left in her checking account. If she writes a check for $55, what will Josie’s balance be?
-$8
1 + (-3) + 11
9
-5 - 6 - (-7)
-4
4(-8)(24)
-768
-1200 ÷ -4 ÷ -6
-50
The altitude of an airplane is decreasing at a rate of 40ft per second. What is the equation and solution that represents the change in altitude of the airplane over a period of 25 seconds?
-40 x 25 = -1000 feet