题目内容
学校运来
吨煤,用去
吨后,又用去余下的
,剩余多少吨?用了多少吨?
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 2 |
(1)
-[(
-
)×
+
],
=
-[
×
+
],
=
-[
+
],
=
-
,
=
(吨),
答:剩余
吨,
(2)(
-
)×
+
,
=
×
+
,
=
+
,
=
(吨),
答:用了
吨.
| 3 |
| 5 |
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 3 |
| 5 |
| 4 |
| 15 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 3 |
| 5 |
| 2 |
| 15 |
| 1 |
| 3 |
=
| 3 |
| 5 |
| 7 |
| 15 |
=
| 2 |
| 15 |
答:剩余
| 2 |
| 15 |
(2)(
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 4 |
| 15 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 2 |
| 15 |
| 1 |
| 3 |
=
| 7 |
| 15 |
答:用了
| 7 |
| 15 |
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