题目内容
脱式计算下面各题.
| 12380-450÷18×482. | 3+3.91÷(22-19.7) |
|
(1)12380-450÷18×482,
=12380-25×482,
=12380-12050,
=330;
(2)3+3.91÷(22-19.7),
=3+3.91÷2.3,
=3+1.7,
=4.7;
(3)
÷(
+
)×
,
=
×
×
,
=
.
=12380-25×482,
=12380-12050,
=330;
(2)3+3.91÷(22-19.7),
=3+3.91÷2.3,
=3+1.7,
=4.7;
(3)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 15 |
| 13 |
| 1 |
| 13 |
=
| 3 |
| 169 |
练习册系列答案
相关题目