简便运算3.34×3.33+2.22×9.99

分类: 作业答案 • 2021-12-19 20:15:37

问题描述：

答

3.34×3.33+2.22×9.99
=3.34×3.33+2.22×3×3.33
=3.34×3.33+6.66×3.33
= （3.34+6.66)×3.33
=10×3.33
=33.3