3.2. MULTIPLICATION AND DIVISION
3.2. Multiplication and Division
Approaches to Multiplication
(1) Repeated addition approach
3 + 3 + 3 + 3 + 3 = 15 or 5 ⇥ 3 = 15
Definition (Multiplication – Repeated Addition Approach).
Let a and b be any whole numbers where a 6= 0. Then
ab = b| + b +{z· · · + }b .
a addends
If a = 1, then ab = 1 · b = b; also 0 · b = 0 for all b.
a and b are called factors, and ab is called the product.
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