Show:
Number Line
Adding Rules
Subtacting Rules
Adding Integers
Subtracting Integers
100
The number directly in the middle of the number line
What is 0
100
When you add two positive numbers the answer is always
positive
100
When we subtract integers, the operation we always end up doing is?
adding
100
9+7
16
100
1-3
-2
200
The number that is the opposite of -10
What is 10
200
When you are adding and both numbers are negative the answer will always be
negative
200
Does the first number, whether negative or positive, ever change when we are subtracting integers?
NO
200
-6+-5=
-11
200
-5-7
-12
300
Order these numbers from greatest to least 1, 0, -12, 100, -99
100, 1, 0, -12, -99
300
Write a problem showing the negative plus negative integer rule.
example -5+-5=-10
300
What do we change the subtracting sign to when we subtract integers?
Adding
300
-10+3
-7
300
-14--7=
-7
400
What number is smaller -45 or -34
-45
400
When you are adding a negative and a positive number what operation do you need to do?
subtract
400
What do we do to the second number when we are subtracting?
Change it to the opposite sign
400
-3+6
3
400
4--16
20
500
Order these numbers from least to greatest -10, 10, 0, -9, 9
-10, -9, 0, 9, 10
500
When you are adding a negative and a positive number, will the answer be positive or negative?
Which ever number is bigger (further away from zero)
500
After we make all changes to subtracting integer problems, what rules should we follow?
Adding Integer Rules
500
-5+-5+6
-4
500
-5+-4-10
-19