题目内容
选择合适的方法计算(要写出主要的计算过程).
6760÷13+17×21
3.33×4.5+4.5×6.67
(
+
)÷(
-
)
12÷[(
+
)×
].
6760÷13+17×21
3.33×4.5+4.5×6.67
(
| 1 |
| 5 |
| 1 |
| 6 |
| 1 |
| 3 |
| 2 |
| 15 |
12÷[(
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 13 |
(1)6760÷13+17×21,
=520+357,
=877;
(2)3.33×4.5+4.5×6.67
=(3.33+6.67)×4.5,
=10×4.5,
=45;
(3)(
+
)÷(
-
)
=
÷
,
=
;
(4)12÷[(
+
)×
]
=12÷[
×
],
=12÷
,
=48.
=520+357,
=877;
(2)3.33×4.5+4.5×6.67
=(3.33+6.67)×4.5,
=10×4.5,
=45;
(3)(
| 1 |
| 5 |
| 1 |
| 6 |
| 1 |
| 3 |
| 2 |
| 15 |
=
| 11 |
| 30 |
| 1 |
| 5 |
=
| 11 |
| 6 |
(4)12÷[(
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 13 |
=12÷[
| 13 |
| 12 |
| 3 |
| 13 |
=12÷
| 1 |
| 4 |
=48.
练习册系列答案
相关题目