7.NS.1a
Understand that the additive inverse of a number is its opposite and their sum is equal to zero.
Example Problems
What number is the opposite of ?
What number is the opposite of ?
What number is the opposite of ?
Khan Academy ResourcesSigns of sumsAdding negative numbers on the number lineInterpret negative number addition and subtraction expressionsInterpreting negative number statementsNumber equations & number linesSubtracting a negative = adding a positiveAdding numbers with different signsAdding fractions with different signsAdding negative numbers exampleAdding negative numbers on the number lineAddition & subtraction: find the missing value (part 1 of 2)Interpreting numeric expressions exampleNumber equations & number linesInterpreting negative number statementsAddition & subtraction: find the missing value (part 2 of 2)

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