1/6+1/24+1/48/+1/120+1/210+1/336+1/512用简便方法

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/11 01:29:36

1/6+1/24+1/60+1/120+1/210+1/336+1/112
=(2/6+2/24+2/60+2/120+2/210+2/336+2/112)*1/2
=(1/1*2-1/2*3+1/2*3-1/3*4+1/3*4-1/4*5+1/4*5-
1/5*6+1/5*6-1/6*7+1/6*7-1/7*8+2/112)*1/2
=(1/2-1/7*8+2/112)*1/2
=(1/2-1/56+1/56)
=1/2*1/2
=1/4

1/6+1/24+1/48/+1/120+1/210+1/336+1/512用简便方法 1、用简便方法计算用简便方法计算,1,2题 9分之1×85分之3×18×51 能用简便方法的用简便方法用简便方法计算：-210又1/37除以19 24除以（1-0.5+25%）用简便方法做 24×5/36-1/8用简便方法计算 16*99+24*1用简便方法计算用简便方法计算：7/8×4+0.875+1/6 2012×2013分之2011 用简便方法计算 50又11分之2×24分之1 用简便方法计算 10/3*[25+1]的简便方法 75×1÷76×77 简便方法