Add 'em
Take 'em away, right?
All about the signs!
It's a Mix!
STRATEGIES
100
What is the solution for:
-5 + (-7)
-12
100
What is the additive inverse of:
-7 - (-4)
BONUS - SOLVE!
-7 + 4 = -3
100
If we multiply a positive and negative together, what sign is the answer?
Negative!
100
The North Pole is 32oF in the summer. If it’s 72oF colder in the winter, what is the temperature in the North Pole in the Winter?
40oF
100
What is a good strategy to use when you have MULTIPLE positive and negative numbers?
T- Chart!
200
Draw a model for the following expression and solve.
-7 + 6 =
200
Solve the following:
4-(-2) and 6 - 9
4 - (-2) = 4+2 = 6
6 - 9 = 6+(-9) = -3
200
What is the equation for the following numberline:
4 groups of -2 = -8
4 ( -2) = -8
200
In a football game, the ball started on the 45 yard line. On the next play, there was a loss of 13 yards. Then, there was a gain of 8 yards. On what yard line is the ball now?
40 yard line
200
What are TWO ways we can model addition and multiplication problems?
Integer Chips, Number Lines
300
Jenny is in a hotel. She started at the ground floor. She went up 5 floors, then down 8 floors, and back up 3 floors. What floor is she on now?
The ground floor, level 0.
5+(-8)+3 = 0
300
Which of the following is equivalent to:
5 - (-3)
a. -5 + 3
b. 5 - 3
c. 5 + 3
d. 5 + (-3)
C 5 + 3
300
What is the answer to the following TWO problems:
- 4 ( -6) =
15 / (-3) =
-4 (-6 ) = 24
15 / (-3) = -5
300
Juan went scuba diving while on vacation in Costa Rica. He started on the surface and descended 15 feet every minute. Which integer represents his depth after 4 minutes?
-45 feet
-15 ( 4 ) = -45
300
What can we use when we have a subtraction integer problem such as 7 - (-12)?
Additive Inverse, KOA, CCO
400
Write the equation for number line:
-5 + 8 = 3
400
Where did Sandy mess up on the problem?
-4 - 9
Step 1: -4 + 9
Step 2: -4 + 9 = 5
BONUS: What is the correct answer?
She did not change the 9 to a negative 9 when changing to the additive inverse.
400
The temperature is falling at a rate of 6oF every hour. If the temperature was 15oF midnight (12am), what will the temperature be at 5am?
-15oF
400
II = +12
III = +12
IV = 12
400
What is a helpful tool when determining the sign of the answer for a multiplication or division problem? Draw it!
500
Sandy was playing cards. Her scores for 6 rounds were:
-5 , 7, 3, -4, -2, 2
What was her overall score?
Her overall score was 1.
500
Easy Points!
Solve the following three problems:
-4 + 7
-8 - (-2)
3 - 5
What is the sum of the answers?
-4 + 7 = 3
-8 - (-2) = -8 + 2 = -6
3 - 5 = 3 + (-5) = -2
3 + (-6) + (-2) = -5
500
SOLVE!!!
4 ( -3) =
12 (5) =
81 / (-9) =
-36 / (-6) =
BONUS!
What is the sum of all the answers?
4 ( -3) = -12
12 (5) = 60
81 / (-9) = -9
-36 / (-6) = 6
BONUS: 45
500
Draw a picture for the following word problem:
The temperature was 3 degrees below zero. It rose 12 degrees, then dropped 2 degrees. What is the new temperature?
Answers will vary
500
What is one positive and one negative together called?
ZERO PAIR!!!