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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