题目内容
脱式计算
(1)68×35-408÷24
(2)(4
-3
)÷
(3)
÷[(
-
)÷
]
(4)
÷(
+
×
)
(1)68×35-408÷24
(2)(4
| 5 |
| 12 |
| 1 |
| 2 |
| 11 |
| 24 |
(3)
| 6 |
| 5 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
(4)
| 13 |
| 18 |
| 5 |
| 6 |
| 2 |
| 3 |
| 3 |
| 8 |
分析:本题根据四则混合运算的运算顺序计算即可:先算乘除,再算加减,有括号的要先算括号里面的.
解答:解:(1)68×35-408÷24
=2380-17,
=1363;
(2)(4
-3
)÷
=
÷
,
=2;
(3)
÷[(
-
)÷
]
=
÷[
÷
],
=
÷
,
=12;
(4)
÷(
+
×
)
=
÷(
+
),
=
÷
,
=
.
=2380-17,
=1363;
(2)(4
| 5 |
| 12 |
| 1 |
| 2 |
| 11 |
| 24 |
=
| 11 |
| 12 |
| 11 |
| 24 |
=2;
(3)
| 6 |
| 5 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
=
| 6 |
| 5 |
| 1 |
| 12 |
| 5 |
| 6 |
=
| 6 |
| 5 |
| 1 |
| 10 |
=12;
(4)
| 13 |
| 18 |
| 5 |
| 6 |
| 2 |
| 3 |
| 3 |
| 8 |
=
| 13 |
| 18 |
| 5 |
| 6 |
| 1 |
| 4 |
=
| 13 |
| 18 |
| 13 |
| 12 |
=
| 2 |
| 3 |
点评:本题中的题目由于不能进行简便计算,完成时要细心,注意通分约分.
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