Using this flowchart will help you to add and subtract positive and negative integers. This chart is intended to be utilized after instruction with manipulatives and/or number lines.
|
|
|
|
|
|
|
|
|
|
Put the middle + or - with the number that does not have a + or -.
example:
-25 +10
| YES
|
Is there only one number without a + or -?
example:
-25 + 10=
| NO
|
Are there two negative signs?
example:
-25 - -10
| NO
|
Is there a positive and negative sign?
-25 + 10
| YES
|
Subtract the least (smallest) number from the greater (biggest) number.
25-10=15
|
|
|
|
|
YES
|
|
|
|
|
Subtract the least (smallest) number from the greater (bigger) number.
25 - 10 = 15
|
| |
|
Add the numbers together.
example:
25 + 10 = 35
|
| |
|
Put a negative sign with your answer IF THE GREATER (BIGGER)
NUMBER HAD A NEGATIVE SIGN.
|
|
|
|
|
|
|
|
|
|
Put a negative sign with your answer IF THE GREATER (BIGGER)
NUMBER HAD A NEGATIVE SIGN.
example:
-15 since the greater (bigger) number has a negative - sign.
|
| |
|
Write a negative sign to your answer.
example:
-35
|
| |
| |
|
|
|
|
|
|
|
|
|
|
| |
|
.
|
| |
| |
|
|
|
|
|
|
|
|
|
|
| |
| |
| |
| |
|
|
|
|
|
|
|
|
|
|
| |
| |
| |
| |
|
|
|
|
|
|
|
|
|
|
| |
| |
| |
| |
|
|
|
|
|
|
|
|
|