|
Subtracting Integers Using Algebra Tiles 4 - (-5) = ? If you have enough to take away, subtraction of integers is easy! -5 - (-3) = ? Take Away So -5 - (-3) = -2 8 - 3 = -10 - (-2) = 40 - 13 = -100 - (-25) = -53.4 - (-3.4) = Practice Taking Away: By adding zero pairs, the number does not change! Can't Take Away? Use Zero Pairs 4 - (-5) = ? By adding zero pairs, the number does not change! Can't Take Away? Use Zero Pairs 4 - (-5) = ? zero pairs Now take away 4 - (-5) = Can't Take Away? Use Zero Pairs 4 - (-5) = ? zero pairs is the same as: Notice: 4 - (-5) = 4 + 5 = Can't Take Away? Use Zero Pairs 4 - (-5) = ? zero pairs Can't Take Away? Use Zero Pairs -4 - 4 = ? Can't Take Away? Use Zero Pairs -4 - 4 = ? zero pairs -4 + (-4) = -4 - 4 = Can't Take Away? Use Zero Pairs -4 - 4 = ? zero pairs Can't Take Away? Use Zero Pairs 2 - 5 = ? zero pairs 2 + (-5) = 2 - 5 = Can't Take Away? Use Zero Pairs 2 - 5 = ? zero pairs -1 - (-3) = ? Can't Take Away? Use Zero Pairs -1 - (-3) = -1 + 3 = -1 - (-3) = ? Can't Take Away? Use Zero Pairs zero pairs |