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Whole Numbers

The counting numbers are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... These numbers are also called the Natural Numbers. The sequence increment is +1. If we memorize the contents of the below table, we will be able to easily calculate the sums of larger numbers.

What patterns can you find in the above table? For example, is 2 + 5 = 5 + 2? This property of addition is called the Commutative Property.

P + Q = Q + P for any numbers P and Q.

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