简算计算题!
简算计算题!
3.8*3.8+3.8*5又五分之一+3.8
13又21分之13*7
3.8*3.8+3.8*5又五分之一+3.8
13又21分之13*7
数学人气:169 ℃时间:2020-03-29 13:15:33
优质解答
把3.8提出来得:3.8*(3.8+5又五分之一+1)=3.8*10=38
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