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Decimal Multiplication 2/Mental multiplication (2)
Decompose the multiplier mentally into its units, typically into its tens and ones. Multiply by the number of tens, then by the number of ones, and add those partial products. Since it is true in arithmetic that we may multiply by decomposing the multiplier, the right-hand distributive law of algebra may be applied to arithmetic. Example 7. Multiply 16
Last Updated: 5th Aug 2016
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