39×10.1简算

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39×10.1简算

39×10.1简算
39×10.1简算

39×10.1简算
39×10.1
=39×(10+0.1)
=39×10+39×0.1
=390+3.9
=393.9

39×10.1=36×(10+0.1)=360+3.6=363.6

39*10.1=39*(10+0.1)=39*10+39*0.1=390+3.9=393.9

39×10.1
=39×(10+0.1)
=39×10+39×0.1
=390+3.9
=393.9