Rules and Definitions
The names of 3 methods to use for adding and subtracting integers are this.
Counters, number line, add the additive inverse, money.
25 + 27 =
52
400
100 / 4 =
25
The temperature fell a total of 12oF in 4 hours. How much did it change each hour?
-3
A negative + negative =
a bigger negative
9 - (-20) =
29
8*(-4)
(-32)
8 / (-4) =
(-2)
A football team lost 3 yards on each of the 4 plays they ran. What was their overall change in yardage?
-12
Multiplying and dividing integers with the same sign will result in a ______ answer
positive
(-15) + 14 - 12 =
-12 * 5 * -3=
180
(-48/6) / (-4/-2) =
(-4)
Harry missed 16 points on a test. Each incorrect response is 2 points. Harry went back and tried to correct some questions and earned 4 points back. How many questions does Harry still have wrong?
6
"Add the opposite" goes for this integer operation
What is subtraction?
162 - 121 + (-62)
-21
-5(19) + (-15)
-110
-221 / -13 - (-2 x 3) =
23
Mary is playing Bingo. Each Bingo card is $15. She plays 10 games and buys 20 cards. For each game, she came in second place and won $8. Did Mary earn her money back? If so, how much does she have? If not, how much is she in debt?
in debt $220
Multiplying and dividing integers with different signs will result in a ______ answer
negative
-12 - (-13) + 14
15
-7(12) + (-23)
-107
-345 / 15 + (-10/-2) =
-18
In a quiz game, you lose 3 points for missing questions and get 4 points for answering correctly. Allison missed 4 questions, but got 8 questions correct. If Allison completed extra credit for a total of 7 points, how many points does Allison have?
12