Question

7.6乘9.9加0.76的简便方法？

（7.9+7.9+7.9+7.9）×0.25脱式简便运算怎么写

Answer 1

7.6×9点9+0点七六等于7.6×9点9+7点6×0点一。等于7.6乘以（9.9+0.1）等于7.6×10等于76。
所以结果是76。

Answer 2

7.6×9.9+0.76
=7.6×9.9+7.6×0.1
=7.6×（9.9+0.1）
=7.6×10
=76
运用乘法分配律可以使这道题计算简便。

Answer 3

7.6×9.9+0.76
=7.6×9.9+7.6×0.1
=7.6×（9.9+0.1）
=7.6×10
=76
（7.9+7.9+7.9+7.9）×0.25
=7.9×4×0.25
=7.9×1
=7.9

Answer 4

一、
7.6×9.9+0.76
=7.6×9.9+0.76×0.1
=7.6×(9.9+0.1)
=7.6×10
=76
二、
（7.9+7.9+7.9+7.9)×0.25
=(7.9×4)×0.25
=7.9×4×0.25
=7.9×(4×0.25)
=7.9×1
=7.9

Answer 5

7.6x9.9+0.76
＝7.6x9.9+7.6x0.1
＝7.6x（9.9+0.1）
＝7.6x10
＝76