六年级分数乘法简算算式

Question

如题所述

Answer 1

三分之二+四分之三×16
=2/3+12
=12又2/3

2.十二分之七×五分之四+×十二分之七×五分之一
=7/12×4/5+7/12×1/5
=7/12×(4/5+1/5)
=7/12

3.2008×二零零七分之二零零六
=2008×2006/2007
=(2007+1)×2006/2007
=2006+2006/2007
=2006又2006/2007

4.(五十六分之十三+七十二分之一)×7×8
=(13/56+1/72)×56
=13+7/9
=13又7/9

5.五分之一×十八分之十三×5×18
=1/5×13/18×5×18
=(1/5×5)×(13/18×18)
=13

6.四分之三×96+3×四分之三+0.75
=3/4×96+3×3/4+1×3/4
=3/4×(96+3+1)
=3/4×100
=75