《用9的乘法口诀求商》教学课件.ppt
用9的乘法口诀求商,表内除法(二),4930182488,56768364,455357213,426648189,看谁算得都对。,7,8,27,9,28,7,8,48,9,19,9,6,自主探索用9的乘法口诀求商,2793,2739,想:()九二十七,想:三()二十七,三,九,口诀:三九二十七,637,639,728,729,546,549,79,89,96,63,9,7,72,9,8,54,9,6,课堂训练,2.填一填。,3,6,2,5,4,2,5,3,24,48,16,40,8,36,18,45,27,9,3.小兔回家。,5.,8,7,5,9,9,7,9,