题目内容
用脱式计算:
(1)(
+
-
)×96;
(2)
÷[(
+
)×
].
(1)(
| 7 |
| 8 |
| 7 |
| 12 |
| 5 |
| 6 |
(2)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
(1)(
+
-
)×96,
=
×96+
×96-
×96
=12×7+8×7-5×16,
=(12+8)×7-5×16,
=140-80,
=60;
(2)
÷[(
+
)×
],
=
÷[(
+
)×
],
=
÷(
×
),
=
÷
,
=3.
| 7 |
| 8 |
| 7 |
| 12 |
| 5 |
| 6 |
=
| 7 |
| 8 |
| 7 |
| 12 |
| 5 |
| 6 |
=12×7+8×7-5×16,
=(12+8)×7-5×16,
=140-80,
=60;
(2)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 10 |
| 15 |
| 3 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 13 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 1 |
| 15 |
=3.
练习册系列答案
相关题目