7.28×0.1+0.5×72.8+0.49×728求简算
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7.28×0.1+0.5×72.8+0.49×728求简算7.28×0.1+0.5×72.8+0.49×728求简算7.28×0.1+0.5×72.8+0.49×728求简算7.28×0.1+0.5×
7.28×0.1+0.5×72.8+0.49×728求简算
7.28×0.1+0.5×72.8+0.49×728求简算
7.28×0.1+0.5×72.8+0.49×728求简算
7.28×0.1+0.5×72.8+0.49×728
=7.28×﹙0.1+5+49﹚
=7.28×54.1
=393.848
7.28×0.1+0.5×72.8+0.49×728
=72.8*0.01+0.5*72.8+4.9*72.8
=72.8*(0.01+0.5+4.9)
=72.8*5.41
=393.848
7.28×0.1+0.5×72.8+0.49×728求简算
7.28*0.1+0.5*72.8+0.049*728的简便计算,急!急!急!
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