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 Arithmetics Addition of whole numbers Addition of two of more whole numbers Addition is the process of finding the total of two or more numbers. We first learn addition through counting: But it is not necessary to draw the picture. You can say: 2 + 1 = 3 5 +7 = 12 132 + 335 = 467 12 + 15 + 8 = 27 + 8 = 35 142 + 265 + 146 = 407 + 146 = 553 Addition properties If a, b and c are whole numbers 1. Associative property: (a+b)+c = a+ (b +c ) 2. Commutative property: a + b = b + a 3. Addition property of zero: a+0 =0+ a = a Add the following whole numbers : $\;45\;+\;67\;+\;228\;=$