Sum (+) of Integers
Find the sum
(+4)+(+20)
24
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
What are opposites?
A negative number and its positive
What is the rule for adding integers with the same sign?
a) The answer is always positive
b) Add the opposite
c) Add across and keep the sign
c
What is the absolute value of |-48|?
48
-12 + 5 =
=-7
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
The distance a number is away from zero
Absolute value
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What is the absolute value of |92|?
92
-16 + (-17) =
-33
Adding Integers: Stephanie has $152 in the bank. she withdraws $20 then deposits $84 in an addition expression to represent this situation find the sum.
216
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
When adding integers with different signs you...
a) Subtract the absolute value and keep the sign of the smaller number
b) Subtract the absolute value and keep the sign of the higher number
c)Subtract the absolute value then add
b
What is the absolute value of -|12|
-12
-5 + (5) - 19 =
-19
You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
You owe 17 dollars
(-17)
What is the name for a whole number that can be negative or positive?
Integer
True or False:
Negative integers added to negative integers equal more negative integers.
-5 ____-10
> Greater than
-8+(-4)+12
0
An airplane takes off and climbs to 2500 feet. After 20 minutes, the airplane descends 200 feet. What is the airplane's current height?
2350 ft.
What do you call opposite numbers that when added together they equal zero?
Additive inverses
When adding many different integers together, what is a smart way to solve...
a) find additive inverses
b) add similar signs first
c) both a and b
c
Put in order from least to greatest
|-2|, 10, -4, 3
-4, |-2|, 3, 10