40.7减2.6以9.3简便算法怎么算

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40.7减2.6以9.3简便算法怎么算40.7减2.6以9.3简便算法怎么算40.7减2.6以9.3简便算法怎么算40.7减2.6以9.3=40.7-2.6×(10-0.7)=40.7-2.6×10+

40.7减2.6以9.3简便算法怎么算
40.7减2.6以9.3简便算法怎么算

40.7减2.6以9.3简便算法怎么算
40.7减2.6以9.3
=40.7-2.6×(10-0.7)
=40.7-2.6×10+2.6×0.7
=40.7-26+1.82
=14.7+1.82
=16.52