VOCAB
Adding Integers
Subtracting Integers
Number Line
100
Opposite Integers
Integers that have the same absolute value but different signs.
100
(-5) + 9 =
4
100
(-4) - 6
-10
100
What is the best Subject in school?
MATH
200
Subtracting an integer is the same as...
A) adding its inverse or opposite
B) adding a positive
C) adding a negative
A) adding its inverse or opposite
200
(-8) + (-4) =
-12
200
15 - (-7)
22
200
__________ numbers are to the right of 0 in a number line. _________ numbers are to the left of 0 in a number line.
Positive
Negative
300
Zero pair
one positive (+) and one negative (-) that when added together equal 0.
300
How do you find the sum of numbers with different signs?
Subtract the two numbers and keep the sign of the largest number
300
Using KEEP CHANGE CHANGE, how do we rewrite the problem: 12 - (-6)
12 + (-6)
300
How do we know which direction to travel on a number line?
The sign of the number tells us which direction to travel
400
When you find a sum you are _________.
When you find the difference you are _________.
Adding
Subtracting
400
(-) + (-) =
A. (+)
B. (-)
B. (-)
400
(-10) - 11 - (-3)
-18
400
8 + (-2)
Which direction do we move and why?
We move to the LEFT because the sign is NEGATIVE
500
Absolute Value
The distance of a number from zero on a number line
500
4 and (-4) is an example of a _____________
Zero pair
500
When subtracting integers we use KEEP CHANGE CHANGE. What do we KEEP CHANGE CHANGE?
KEEP the first number exactly the same
CHANGE the subtraction sign to an addition sign
CHANGE the sign of the last number to the opposite sign. If the number was positive (+) we change it to negative (-) and if the number was negative (-) we change it to positive (+)
500
To add positive integer, move to the _______.
To add negative integer, move to the _______.
RIGHT
LEFT