题目内容
计算下面各题.
×
÷
÷[(
-
)×3].
| 5 |
| 9 |
| 8 |
| 15 |
| 4 |
| 9 |
| 1 |
| 12 |
| 5 |
| 6 |
| 1 |
| 2 |
(1)
×
÷
,
=
×
×
,
=
;
(2)
÷[(
-
)×3],
=
÷[
×3],
=
÷1,
=
.
| 5 |
| 9 |
| 8 |
| 15 |
| 4 |
| 9 |
=
| 5 |
| 9 |
| 8 |
| 15 |
| 9 |
| 4 |
=
| 2 |
| 3 |
(2)
| 1 |
| 12 |
| 5 |
| 6 |
| 1 |
| 2 |
=
| 1 |
| 12 |
| 1 |
| 3 |
=
| 1 |
| 12 |
=
| 1 |
| 12 |
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