一半水:7/8-1/2=3/8
∴桶重:7/8-3/8×2=7/8-6/8=1/8千克
一桶水重8分之7千克,倒出一半水后连桶重2分之一,桶重多少千克?
一桶水重8分之7千克,倒出一半水后连桶重2分之一,桶重多少千克?
要写过程和为什么.
要写过程和为什么.
数学人气:751 ℃时间:2019-09-09 18:21:30
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