2.22×9.9+6.6×6.7简算

分类: 作业答案 • 2021-12-20 05:48:44

问题描述：

2.22×9.9+6.6×6.7简算

答

2.22*（100-1）+（6+0.6）*6.7
后面自己算

答

2.22×9.9+6.6×6.7
=2.22×3.3X3+3.3X2×6.7
=6.66X3.3+13.4X3.3
=(6.66+13.4)X3.3
=20.06 X3.3
=66.198