Adding and Subtracting
15+(-7)
8
(-7)*3
-21
a + 15 = 20
a = 5
A pelican is flying 40 meters above sea level, and a dragonfly is flying 20 meters above sea level.
What is the distance between the pelican and dragonfly? Include units.
20 meters
-7 + 26
19
-4 - (-8)
4
(-5)(-8)
40
b - 4 = -8
b = -4
Martin had $38 in his bank account, and he withdrew $42 from his bank account. What is his new account balance? Include units.
-$4
-39 - (-57)
18
39 + (-68)
-29
(-63)/(-9)
7
-10 = 5c
c = -2
An eagle is flying 60 meters above sea level, and a jellyfish is swimming 45 meters below sea level. What is the distance between the eagle and the jellyfish? Include units.
105 meters
Let x = -8 and y = 6 .
What is xy ?
-48
Let x=(-6) and y = (-5) .
What is y - x?
1
Let x = -54 and y = 9.
What is x/y ?
-6
d/10 = -5
d= -50
Jacob has -$56 in his bank account, and he deposits $121 . What is his new account balance? Include units.
$65
I had $37 in my bank account, and I withdraw $50. What is my new account balance?
-$13
A hawk is flying 50 feet above sea level.
A bass is swimming 14 feet below sea level.
What is the distance between the hawk and the bass? Include units.
64 feet
How many fish were there in the pond last year? Include units.
10 fish
e/-3 = -7
e = 21
Water is leaking out of a bucket at rate of -4 gallons per minute. If the bucket started at 48 gallons, how long will it take the bucket to drain to 16 gallons? Include units.
8 minutes
A squid is diving deep in the ocean at a constant rate. After 5 hours of diving, the squid is -400 kilometers below sea level. After 9 hours of diving, the squid is at -800 kilometers below sea level.
At what rate is the squid diving? Include a sign and units in your answer.
-100 kilometers per hour