9的乘法口诀.ppt
9的乘法口诀,陆城中心小学:陈湘英,0,9,18,27,36,45,54,63,72,81,0,9,18,27,36,45,54,63,72,81,19=,29=( ),9 1 =,9( )=( ),一九得九,9,9,18,18,39=( ),27,27,49=( ),36,36,59=( ),45,45,69=( ),54,54,79=( ),63,63,89=( ),72,72,99=( ),81,二九十八,三九二十七,四九三十六,五九四十五,六九五十四,七九六十三,八九七十二,九九八十一,9( )=( ),9( )=( ),9( )=( ),9( )=( ),9( )=( ),9( )=( ),2,3,4,5,6,7,8,我有一双巧巧手, 共有十个手指头, 我用它来记口诀, 记住口诀不用愁!,一九得九,二九十八,三九二十七,四九三十六,五九四十五,六九五十四,七九六十三,八九七十二,九九八十一,看口诀说出两个乘法算式,三九二十七,九九八十一,一九得九,七九六十三,199,919,7963,9763,3927,9327,9981,想口诀,积是几。 9 1= 9 4= 9 7= 9 2= 9 5= 9 8= 9 3= 9 6= 9 9=,9,36,63,18,45,72,27,54,81,4936,7963,5945,2918,看算式说口诀,七九六十三,五九四十五,四九三十六,二九十八,94=,98=,95=,96=,99=,4=36,9=72,9=63,81,36,72,45,54,9,8,7,9=45,5,97=,63,花儿后面藏着谁?,休息了,