3.2乘54加6.8乘29怎么简算_数学解答

3.2乘54加6.8乘29怎么简算

人气：212 ℃　时间：2020-06-08 15:09:22

解答

3.2×54+6.8×29
=3.2×29+3.2×25+6.8×29
=29×（3.2+6.8）+3.2×25
=290+4×0.8×25
=290+4×25×0.8
=290+100×0.8
=290+80
=370