4.39×9.8+0.439+0.49用简便方法怎么计算?
2022-11-27
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4.39×9.8+0.439+0.49用简便方法怎么计算?
4.39×9.8+0.439+0.49
=0.439x(98+1)+0.49
=0.439x(100-1)+0.49
=43.9-0.439+0.49
=43.9+0.051
=43.951
4.39×9.8+0.439+0.49
=0.439x(98+1)+0.49
=0.439x(100-1)+0.49
=43.9-0.439+0.49
=43.9+0.051
=43.951
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