23.5×0.4+0.24÷0.4,这道题怎么巧算,

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23.5×0.4+0.24÷0.4,这道题怎么巧算,23.5×0.4+0.24÷0.4,这道题怎么巧算,23.5×0.4+0.24÷0.4,这道题怎么巧算,答:23.5×0.4+0.24÷0.4=47

23.5×0.4+0.24÷0.4,这道题怎么巧算,
23.5×0.4+0.24÷0.4,这道题怎么巧算,

23.5×0.4+0.24÷0.4,这道题怎么巧算,
答:
23.5×0.4+0.24÷0.4
=47×0.5×0.4+6×0.4÷0.4
=47×0.2+6
=9.4+6
=15.4