题目内容
计算题.
×(
+
)
÷(3-
-
)
÷[
-(
+
)].
| 1 |
| 15 |
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 4 |
| 7 |
| 15 |
| 8 |
| 15 |
| 4 |
| 9 |
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 3 |
(1)
×(
+
)
=
×
,
=
,
(2)
÷(3-
-
)
=
÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
.
(3)
÷[
-(
+
)],
=
÷[
-
],
=
×3,
=
.
| 1 |
| 15 |
| 1 |
| 3 |
| 1 |
| 12 |
=
| 1 |
| 15 |
| 5 |
| 12 |
=
| 1 |
| 36 |
(2)
| 1 |
| 4 |
| 7 |
| 15 |
| 8 |
| 15 |
=
| 1 |
| 4 |
| 7 |
| 15 |
| 8 |
| 15 |
=
| 1 |
| 4 |
=
| 1 |
| 4 |
=
| 1 |
| 8 |
(3)
| 4 |
| 9 |
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 3 |
=
| 4 |
| 9 |
| 5 |
| 6 |
| 3 |
| 6 |
=
| 4 |
| 9 |
=
| 4 |
| 3 |
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