18..33÷3.9+5.7?
18..33÷3.9+5.7?
先将循环小数转换为分数,这样计算的结果摘会精准。
18.33333....(小数后无无限循环)
=18+0.33333...
18+1/3
因此,原算式可以转换为:
18.333333...除以3.9+5.7
=(18+1/3)/3.9+5.7
=(56/3)/3.9+5.7
=56/11.7+5.7
=(56+5.7*11.7)/11.7
=122.69/11.7
约等于10.486
18..33÷3.9+5.7?
先将循环小数转换为分数,这样计算的结果摘会精准。
18.33333....(小数后无无限循环)
=18+0.33333...
18+1/3
因此,原算式可以转换为:
18.333333...除以3.9+5.7
=(18+1/3)/3.9+5.7
=(56/3)/3.9+5.7
=56/11.7+5.7
=(56+5.7*11.7)/11.7
=122.69/11.7
约等于10.486