85分之4除以86分之1等于几?脱式计算

问题描述:

85分之4除以86分之1等于几?脱式计算

4/85÷1/86
=4/85×86
=4/85×(85+1)……………………变一变就简便
=4/85×85+4/85×1
=4+4/85
=4又4/85

85分之4除以86分之1
4/85除以1/86
=(4/85)X86
=5又85分之1

85分之4除以86分之1
4/85除以1/86
=(4/85)X86
=(4/85)X(85+1)
=4+(4/85)
=4又85分之4