154.8+9.5这道题的简便方法
4年级数学题目,20分~全做出来追加5分!!! -
5.75-(3/4+2/15)=345/60-53/60 =292/60 =73/15 =4又13/15 5/6+(1.5-5/6)=5/6+4/6 =9/6 =1又1/2 4/11×0÷5/6 =0 81÷2/7÷2种?(这条题是什么意思?无视“种”字的话)567/2÷2 =567/4 1.1/4×(4)=1/5×(5)=1/6×(6)=1/7×(7)=1 2.5还有呢?
5.75-(3/4+2/15)=345/60-53/60 =292/60 =73/15 =4又13/15 5/6+(1.5-5/6)=5/6+4/6 =9/6 =1又1/2 4/11×0÷5/6 =0 81÷2/7÷2种?(这条题是什么意思?无视“种”字的话)567/2÷2 =567/4 1.1/4×(4)=1/5×(5)=1/6×(6)=1/7×(7)=1 2.5还有呢?