A poster showing when to add and subtract positive and negative integers.
Positive and negative integers are a difficult concept, especially when you need to add and subtract them. This poster shows what happens when the signs are the same and when they are different.
Common Core Curriculum alignment
Understand that positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, positive/negative electric charge); use ...
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