Question

0.33×9.1 +0.033×9怎么巧算？

Answer 1

0.33×9.1+0.033×9

=0.033×10×9.1+0.033×9

=0.033×(91+9)

=0.033×100

=3.3

回答完毕，希望能帮到你，满意请点赞，谢谢！

Answer 2

0.33×9.1 +0.033×9 把0.033×9转换0.99×0.9
=0.33×9.1+0.33×0.9
=0.33×（9.1+0.9） 提取共项0.33
=0.33×10
=3.3

Answer 3

可以简便计算，先把9拆成0.9×10，提取同类项后，再进行凑整计算，也就是0.33×9.1+0.033×9=0.33×9.1+0.033×10×0.9=0.33×（9.1+0.9）=0.33×10=3.3，谢谢

Answer 4

原式=0.33×9.1+0.33×0.9
=0.33×（9.1+0.9）
=0.33×10
=3.3

Answer 5

两个数相乘，一个扩大另一个缩小相同的倍数（0除外），积不变。
0.33x9.1+0.033x9
=0.33x9.1+0.33x0.9
=0.33x（9.1+0.9）
=3.3