用简便方法计算3.25*7.8+3.25*0.21+0._数学解答

用简便方法计算3.25*7.8+3.25*0.21+0.

人气：419 ℃　时间：2020-04-08 14:01:52

解答

3.25*7.8+3.25*0.21+0.325
=0.325*78+0.325*2.1+0.325
=0.325*(78+2.1+1)
=0.325*81.1
=26.3575
请注意,上楼的答案做错了.