Vocab
What is absolute value?
The distance from zero (positive or negative)
6+(-4)
2
|-9|
9
7 - 10
-3
What is brown and sticky?
A stick
What is an integer?
A positive and negative number
-3+2
-1
|15|
15
-5 - 7
-12
How many days are there in one year?
365 days
Explain the rule for adding integers
If the signs are the same, you can add. If they are opposite, you subtract
-5+ (-6)
-11
|4|
4
6- (-4)
10
How many students are in the 6th grade?
25
Explain the rule for subtracting integers
You must first flip the subtraction equation to addition and change the 2nd integer to its opposite.
Keep, Change, Change
-20 + 3
-17
|-10|
10
-7 - 10
-17
How many grades do we have at our school?
3 (6th, 7th, 8th)
When subtracting integers, how do you know if your answer will be positive or negative?
keep the sign of the biggest (absolute value) number
-12 + (-4) + (-3)
-19
|5|
5
-4 - (-6) - 2
0
What is the closest planet to Earth?
Mercury