4.05+37.85简便算
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4.05+37.85简便算
4.05+37.85简便算
4.05+37.85简便算
4.05+37.85
=(4+37)+(0.05+0.85)
=41+0.9
=41.9
37+3+1.05+0.85
4.05=1.05+3,37.85=37+0.85所以1.05+0.85=1.9
3+37=40
40+1.9=41.9
4.05+37.85简便算
4.05+37.85简便算
4.05+37.85简便算
4.05+37.85
=(4+37)+(0.05+0.85)
=41+0.9
=41.9
37+3+1.05+0.85
4.05=1.05+3,37.85=37+0.85所以1.05+0.85=1.9
3+37=40
40+1.9=41.9