Properties
Name the property that allows you to change the order of numbers being added
commutative property
-8 + (-17)
-25
3 - (-19)
-22
Jenna goes scuba diving 132 feet below the surface. She the dives down 15 more feet. Write and solve an addition sentence that describes Jenna's present depth.
-132 + -15 = -147
What is the opposite of -6.7?
6.7
Name the property that allows you to regroup numbers that are being added
associative property
-89 + 51
-38
-14 - (-21)
7
The stock market has a loss of 15 1/2 points on Monday. On Tuesday the stock market gains 40 1/4 points. What is the over all change in the stock market for the week so far?
24 3/4
Fill in the blank:
7.2 + _____ = 0
-7.2
A number plus its opposite is called
the additive inverse
-91.2 + (-18.25)
-109.45
(-5.2) - 3.3
-8.5
The highest and lowest temperatures ever recorded in Africa are 136° F and -11° F. The highest temperature was recorded in Libya, and the lowest temperature was recorded in Morocco. What is the difference in these temperatures?
147° F
8 + -8 is an example of
additive inverse
0 plus any number is the number
additive identity
(18 1/5) + (-21 7/10)
-3 1/2
(-1 1/5) - (- 3 3/4)
2 11/20
Superman flies from an underground lair that is 72 1/8 feet under ground to the top of a building that is 682 1/16 feet above ground. Write and solve an equation to represent the difference in heights.
682 1/16 - (-72 1/8) = 754 3/16
use the rule of subtraction to rewrite 8 - 15
8 + (-15)
changing subtraction to adding the opposite
the rule of subtraction
-7/12 + (-8/18)
-1 1/36
(-8/11) - (-4 1/2) + (-7 1/4)
-3 21/44
Mimi goes on a new roller coaster at six flags that starts 22.7 feet underground. The first climb is 121.72 feet and the first drop is 75.4 feet. Then the roller coaster does an upside down loop that goes up 62.1 feet and comes down 68.5 feet. What is the final height of the car at the end of the coaster?
17.22 feet
use the rule of subtraction to rewrite -7 - 3
-7 + (-3)