Adding Integers
The local movie theater reported losses of $475 each day for three days. What was the loss for the three days?
(-$475) + (-$475) + (-$475) = -$1,425
-8 - (-5)
-3
6 x (-4) =
-24
3 and -3 are called __________ because they have a sum of 0.
Additive inverses or opposites
It will be – 12º tonight. The weatherman predicts it will be 25º warmer by noon tomorrow. What will the temperature be by noon tomorrow?
– 12º + 25º = 13º
-8 - (-15) =
7
-8 x (-7) =
56
-2 and 2 are both the same distance from zero, so they have the same _______________.
absolute value
-15 + 13 =
-2
0 - (-8) =
8
48 ÷ (-8) =
-6
In 84 ÷ 12 = 7,
7 is called the _____________.
quotient
A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?
-800 ft.+ 250 ft. = -550 ft.
At 2 pm, the temperature was -9 degrees. If the temperature drops 20 degrees, what is the new temperature?
-9 - 20= -29 degrees
Jim was recovering in the shade from a walk in the hot desert. His temperature dropped 2 degrees each hour for 6 hours. What was the total change in his temperature?
(-2) x 6 = -12 degrees
A football team was penalized 90 yards in 6 plays. How many yards per play were they penalized on average?
90 / 6 = 15 yards per play on average
Whole numbers like 22, -1, 0, 589, -25, and 2 are special kinds of numbers called ________________.
integers
Francisco left his house and walked 250 feet north to meet his friend at the park. Him and his friend walked back south 350 feet to go to the store. Then they went to Francisco's house to play videogames. How far is the store from Francisco's house?
250 - 350 = 100 The store is 100 feet south from his house.
In Buffalo, New York, the temperature was -14°F in the morning. If the temperature dropped 7°F, what is the temperature now?
-21°F
A pebble falls into a pond. From the surface, it descends at a rate of 2 feet per second. Where is the pebble in relation to the surface of the pond after 5 seconds?
(-2) x 5 = -10 It is 10 feet below the surface after 5 seconds.
Judges in figure skating competitions must give a mandatory 5 point deduction for each jump missed during the technical part of the competition. Julie has participated in 5 competitions this year and has been given a total of -20 points for jumps missed. How many jumps did she miss this year?
(-20) ÷ (-5) = 4 Julie has missed 4 jumps.
-5.15, 1/4, 3.23, 2/3, -24, 0
are called ______________ .
rational numbers