题目内容
下面各题怎样算简便就怎样算.
×
÷
9.75×
+
×0.8
(4-0.4)×(
+
).
| 3 |
| 4 |
| 5 |
| 12 |
| 7 |
| 22 |
9.75×
| 4 |
| 5 |
| 1 |
| 4 |
(4-0.4)×(
| 2 |
| 9 |
| 2 |
| 3 |
(1)
| 3 |
| 4 |
| 5 |
| 12 |
| 7 |
| 22 |
=
| 3 |
| 4 |
| 5 |
| 12 |
| 22 |
| 7 |
=
| 55 |
| 56 |
(2)9.75×
| 4 |
| 5 |
| 1 |
| 4 |
=9.75×0.8+0.25×0.8,
=(9.75+0.25)×0.8,
=10×0.8,
=8,
(3)(4-0.4)×(
| 2 |
| 9 |
| 2 |
| 3 |
=(4-
| 2 |
| 5 |
| 2 |
| 9 |
| 6 |
| 9 |
=
| 18 |
| 5 |
| 8 |
| 9 |
=3
| 1 |
| 5 |
练习册系列答案
相关题目