谢谢
第1个回答 2019-12-03
9.9x6.27
=（10-1）x6.27
=1.x6.27-1x6.27
=62.7-6.27
=56.43
希望能帮到你！本回答被网友采纳
=（10-1）x6.27
=1.x6.27-1x6.27
=62.7-6.27
=56.43
希望能帮到你！本回答被网友采纳
第2个回答 2019-12-03
9.9×6.27
=（10-0.1）×6.27
=10×6.27-0.1×6.27
=62.7-0.627
=62.073
=（10-0.1）×6.27
=10×6.27-0.1×6.27
=62.7-0.627
=62.073
