Room 106 Grade 7 Blog!
Wednesday, January 11, 2012
Subtracting Integers
To subtract an integer add its opposite. First rewrite each subtraction sentence as an addition sentence. Then solve. Eg)
(+4) - (+7) =
(+4) + (-7) = (-3)
(+4) - (-4) =
(+4) + (+4) = (+8)
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