Question

9.99×7.78+6.66x3.33简便计算解说？

Answer 1

简便运算过程如下：

1、提取原式：9.99×7.78+6.66×3.33

2、计算过程：

      =9.99×7.78+2.22×( 3x3.33 )

      =9.99×7.78+2.22×9.99

      =9.99×（7.78+2.22)

      =9.99×10

      =99.9

3、计算结果：99.9

4、谢谢，期待您的采纳。

Answer 2

9.99×7.78+6.66x3.33
=9.99x7.78+2.22x3x3.33
=9.99x7.78+2.22x9.99
=9.99x(7.78+2.22)
=9.99x10
=99.9

Answer 3

可以将6.66拆成2.22×3，后面就变成2.22×3×3.33=2.22×9.99，接着提取公因式9.99，将7.78+2.22的结果算出来，再乘以9.99就可以，脱式计算就是=9.99×7.78+2.22×3×3.33=9.99×7.78+2.22×9.99=9.99×（7.78+2.22）=9.99×10=99.9。

Answer 4

9.99*7.78=77.7222
6.66*3.33=22.1778