六年级上册人教版数学第二单元分数简便算法练习题 见下9/4x2/21-5/4x6/5 16/15x21/20x5/1 (6/5-12/5)x36 2/1x3/2x4/3x5/4x6/5 = = = =(6/5+12/5)x48 12x4/3x12/5 16x(4/3-8/3) 11/8x6/7x4/11 = = = =急

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/21 10:52:22

六年级上册人教版数学第二单元分数简便算法练习题 见下
9/4x2/21-5/4x6/5 16/15x21/20x5/1 (6/5-12/5)x36 2/1x3/2x4/3x5/4x6/5
= = = =
(6/5+12/5)x48 12x4/3x12/5 16x(4/3-8/3) 11/8x6/7x4/11
= = = =

请把分子和分母约掉,再计算