All nerfherder's Items>Mental Math Secrets - Your Secret Weapon for Succe...>Mental Math - Ep15 - Multiply 3-digit by 3-digit numbers.
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Mental Math - Ep15 - Multiply 3-digit by 3-digit numbers_iPod.m4v
21.23MB
MathTutorDVD.com explains how to rapidly multiply 3-digit by 3-digit numbers using the technique of criss-cross multiplication.
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