1、,第 3 课时 练习课,第 4 单元 表内除法（二）,练习课,1,4,6,8,8,3,7,5,一七得七,四八三十二,六八四十八,七八五十六,八八六十四,三七二十一,七七四十九,五八四十,24,6,4,24,3,8,3.将下列算式填在合适的( )里。,357 426 77 728 366,( )( ) ( )( )( ),77,728,426,366,357,4.看一看，算一算,2,2,2,4,8,4,3,9,3,4,6,8,8,5,7,8,2,6,7,5,9,9,5,7,6,8,7,5,9,9,7,9,546=9（盒）,答：可以装9盒。,488=6（本）,4930182488,56768 36
2、4,455 357 213,426 639 189,8. 看谁算得都对。,7,7,27,9,28,7,8,48,9,19,9,6,问题：（1）谁愿意来汇报一下你的计算结果？,（2）都有哪些同学算对了？,小结：看来我们在口算的时候，一定要认真看清每一道题的运算符号啊！只有这样才能算对。,比赛开始！看谁算得对。,7,49,2,16,3,27,49,7,16,2,27,3,4,5,8,3,6,7,9,279,324,488,305,426,355,246,639,364,405,182,217,213,328,497,142,648,455,99,728,549,284,369,186,7,7,8,9,3,9,7,1,4,6,7,4,
