4.9×10.1用简便算法怎么算?
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4.9×10.1用简便算法怎么算?4.9×10.1用简便算法怎么算?4.9×10.1用简便算法怎么算?4.9×10.1=4.9×(10＋0.1)=4.9×10＋4.9×0.1=49＋0.49=49.4
4.9×10.1用简便算法怎么算?
4.9×10.1用简便算法怎么算?
4.9×10.1用简便算法怎么算?
4.9×10.1
=4.9×(10＋0.1)
=4.9×10＋4.9×0.1
=49＋0.49
=49.49