The number line:Integers are positive whole numbers,negative whole numbers and zero.Integers are always represented on the number line at equal intervals which are equal to one unit.Addition of Integers:Addition of integers can be represented on a number line .For example, to add +3 to 0 , we begin at 0 and move 3 units to the right as shown below in red to get +3, Also to add + 4 to +3 we move 4 units to the right as shown in blue to get +7.
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