Sum (+) of Integers
Find the sum
4+16 =
20
What is the absolute value of |-48|?
48
Adding Integers: A football team loses 5 yards on one play and then loses 8 yards on the next play. How many yards did they lose on the two plays?
They lost 13 yards
-13
On a graph, the x- axis, is read left to right
or up and down?
x- axis is always read left-right / right to left
What are opposites?
A negative number and its positive
("inverse")
-12 + 5 =
=-7
What is the absolute value of |92|?
92
Daily Double
Adding Integers: You park in a garage 3 floors below ground level. Then you get in the elevator and go up 12 floors. What floor do you get off the elevator?
9th floor
On a graph, the y-axis is vertical or horizontal?
vertical (up/down)
What is absolute value?
The distance away from zero
(always a positive number)
-16 + 17 =
Absolute value: which is greater |-12| or |12|?
both equal 12
Adding Integers: Stephanie has $15 in the bank. She deposits 4 dollars into her account. Use an equation to represent this situation and find the sum.
15 + 4 = 19
When adding integers, if the signs are different do you add or subtract?
Subtract.
Always subtract if the signs are different when adding.
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
-5 + (-13) =
-18
-5 ____-10
> Greater than
Subtracting Integers: You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
You owe 17 dollars
(-17)
When adding integers, the answer will/will not take the same sign as the addend with the largest absolute value.
Will.
Addends with Same Signs = addition
Addends with Different signs = subtraction
Adding a negative is the same as...
A) subtracting a positive
B) adding a positive
C) subtracting a negative
A