Question

99.99×0.8+11点11×2.28如何简便计算？

Answer 1

99.99×0.8+11.11×2.28
=11.11×9×0.8+11.11×2.28
=11.11×(9×0.8+2.28)
=11.11×3
=33.33

Answer 2

99.99x0.8+11点11x2.28简便计算方法如下:99.99x0.8+11.11x2.28=11.11x9x0.8+11.11x2.28=11.11x0.72+11.11x2.28=11.11x(0.72+2.28)=11.11x3=33.33
只要把乘数换算成相同的乘数合并同类项即可。

Answer 3

99.99×0.8+11.11×2.28
=11.11×9×0.8+11.11×2.28
=11.11×0.72+11.11×2.28
=11.11×（0.72+2.28）
=11.11×3
=33.33
望采纳，谢谢！

Answer 4

同学，平时要注意观察，培养数学中对数字的敏感性，懂得拆分数字，如99.99=11.11×9，进一步看到两个式子中有公因子11.11就可以提取公因子，然后进行计算。
99.99×0.8+11.11×2.28
=11.11×9×0.8+11.11×2.28
=11.11×7.2+11.11×2.28
=11.11×(7.2+2.28)
=11.11×9.48
=105.3228

Answer 5

99.99×0.8+11.11×2.8
=11.11×9×0.8+11.11×2.8
=11.11×7.2+11.11×2.8
=11.11×(7.2+2.8)
=11.11×10
=111.1
采用乘法分配率的逆运算和乘法结合律可以进行简便计算。