Two Signs Together?
"-" and "+"signs show two things:
When we do operations (like adding and subtracting) with integers we often end up with two signs next to each other. This can be confusing but the rules below can help:
+3 means positive three. 3 is the same as +3
We usually don't say "positive" or write the + sign so you will not see two plus signs together very often.
|negative and a positive
minus and a plus
|Positively a negative||+ - = -
- + = -
|negative and a negative
minus and a minus
|Not negative - so it's positive||- - = +|
|positive and a positive
plus and a plus
|Positively positive||+ + = +|
|This is ...||... the same as this||... and it equals|
|-2 + (-3)||-2 - 3||-5|
|6 - (+4)||6 - 4||2|
|-7 - (-5)||-7 + 5||-2|
8 + (+9)
|8 + 9||17|
Try the short quiz below for some practice applying Integer Rules.
Use these two worksheets to practice applying the rules to the addition and subtraction of integers: