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Addition and Subtraction of IntegersUsing a number line
Objectives be able to add integers using a number linebe able to subtract integers using a number line
Adding a positive integerTo use a number line to carry out start at +2 face the positive direction move forward three spaces +1 +2 +3 +4 -4 -3 -2 -1 +5 -5 = +5
Adding a negative integerTo use a number line to carry out start at +2 face the positive direction move backward three spaces +1 +2 +3 +4 -4 -3 -2 -1 +5 -5 = -1
Subtracting a positive integerTo use a number line to carry out start at +5 face the negative direction move forward three spaces +1 +2 +3 +4 -4 -3 -2 -1 +5 -5 = +2
Subtracting a negative integerTo use a number line to carry out start at +2 face the negative direction move backwards three spaces +1 +2 +3 +4 -4 -3 -2 -1 +5 -5 = +5
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