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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.
Definition of Division. Division is an operation that tells us the number of groups that can be made out of a number of items or the number of items that should be there in a group. The symbol 'Ã·' denotes division. For example, the division number sentence 8 Ã· 2 = 4 says that there are four groups of 2's in 8.