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multiplication. n. 1. (Mathematics) an arithmetical operation, defined initially in terms of repeated addition, usually written a Ã b, a.b, or ab, by which the product of two quantities is calculated: to multiply a by positive integral b is to add a to itself b times.
Subtraction is a mathematical operation that represents the operation of removing objects from a collection. It is signified by the minus sign (â). For example, in the picture on the right, there are 5 â 2 applesâmeaning 5 apples with 2 taken away, which is a total of 3 apples. Therefore, 5 â 2 = 3.