题目内容

脱式计算(能简算的要简算)
3
4
-
5
8
)÷(
1
2
-
1
3
1
4
×
1
4
+
3
4
×
1
4
60÷(3+
3
4
7
12
-
3
8
)×24-
5
9
5
24
+
7
12
-
2
3
)×48
1
3
÷
4
9
+
1
3
+
1
4
(1)(
3
4
-
5
8
)÷(
1
2
-
1
3
),
=
1
8
÷
1
6

=
3
4


(2)
1
4
×
1
4
+
3
4
×
1
4

=
1
4
×
1
4
+
3
4
),
=
1
4
×
1,
=
1
4


(3)60÷(3+
3
4
),
=60÷3
3
4

=16;

(4)(
7
12
-
3
8
)×24-
5
9

=
7
12
×24-
3
8
×24-
5
9

=14-9-
5
9

=5-
5
9

=4
4
9


(5)(
5
24
+
7
12
-
2
3
)×48,
=
5
24
×48+
7
12
×48-
2
3
×48,
=10+28-32,
=38-32,
=6;

(6)
1
3
÷
4
9
+
1
3
+
1
4

=
3
4
+
1
4
+
1
3

=1+
1
3

=1
1
3
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