题目内容
脱式计算
| 15÷[(
| 180×[(
|
(1)
÷(
-
)×
,
=
÷
×
,
=
×
,
=
;
(2)15÷[(
+
)÷
],
=15÷[
÷
],
=15÷
,
=9;
(3)180×[(
+
)×
],
=180×[
×
],
=180×
,
=30.
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 2 |
=
| 9 |
| 4 |
| 1 |
| 2 |
=
| 9 |
| 8 |
(2)15÷[(
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 2 |
=15÷[
| 5 |
| 6 |
| 1 |
| 2 |
=15÷
| 5 |
| 3 |
=9;
(3)180×[(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 5 |
=180×[
| 5 |
| 6 |
| 1 |
| 5 |
=180×
| 1 |
| 6 |
=30.
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