Subtracting Integers
Subtract the integers
7 - 10
-3
Add the integers
6+(-4)
2
Multiply the integers
-3(2)
-6
Divide the integers
-15 ÷ 3
-5
True or False: A fish is 20 feet below the surface of the water, and swims up to the surface for air. The integer that represents the dolphin's final position with respect to the surface of the water is -20.
False, it is 0
Give an example of numbers that are opposites
Subtract the integers
-85 - 47
-132
Add the integers
-63+22
-41
Multiply the integers
3(-6)
-18
Divide the integers
-28 ÷ 7
-4
-8 - (-6)= -12
False -2
What is the definition of "integer"
Any whole number positive or negative AND ZERO
If answered correctly take 1 extra spot forward, if answered incorrectly go one extra spot back (2 spaces)
Subtract the integers
-9 - 4 - 4
-17
Select all the sums that are positive
a. -4 + (-3)
b. 9 + (-7)
c. 0 + (-3)
d. -7 + 8
b and d
-7(-6)(0.5)
21
A diver completed 6 dives for a total depth of 114 feet. Write an expression to represent the average depth of the diver's dives in relation to the water's surface
19 ft per dive
-9(7)(-3)= 180
False 189
DOUBLE
What operation(s) are these rules for?
Same sign- positive
Different sign- Negative
Rules for Multiplying and Dividing Integers
The temperature at 1 PM is 10C degrees. The temperature then drops 17C degrees. What is the final temperature?
-7C degrees
Add the integers
-55 + (-36)
-91
If you got the answer correct, you may switch spots with another team on the board! If you got the answer incorrect, go back 3 spaces instead of 2
Multiply the integers
3(-7)(-2)
42
Take a spin on the wheel... what will fate decide?
Divide the integers
-48 ÷ -6
8
True or False: You can plot
4/0
on a number line
FALSE, The answer is undefined, therefore cannot be plotted.
What is the definition of "absolute value"
Distance a number is from zero on the number line.
If answered correctly, you may take an extra step forward or take a spin on the wheel to let fate decide
Cary borrows $8.00 from his mom, and then borrows $6.00 more. Fill in the blanks to create and evaluate the expression that represent Cary's debt to show how much he now owes his father. How much does he OWE?
____________ - ___________ = __________
-8 - 6 = -14
He owes $14
Carlos is playing a game. In order to move to the next level he must score at least 15 points. He scored 22 points for correct answers and -7 points for incorrect answers. Did he make it to the next level?
Yes, because he scored exactly 15 points.
22 - 7 = 15
Find the product (-4)(-12). Find the product of (-3)(-14). Which product is greater?
(-4)(-12) = 48
(-3)(-14) = 42
The product of (-4)(-12) is greater
Select all expressions that are equivalent to -4
(-12)/3
12-:(-3)
12/3
-12-: (-3)
(-12)/3
12-:(-3)
True or false: Integers and their opposites are related by:
1. Being on opposite sides of the number line
2. Combine to make 0
3. Have the same signs
False. They have OPPOSITE signs
What operation are these rules for?
Same sign- add
Different sign- subtract
Rules for adding integers