题目内容

计算下列各题.
5
8
+
1
4
)÷
7
16
13
15
÷
39
45
×
3
10
5
6
-
2
3
)×
9
10
1-
7
9
÷
7
8
(0.75-
3
16
)×(
2
9
+
1
3
7
16
-
1
2
×
7
8
(1)(
5
8
+
1
4
)÷
7
16

=
7
8
×
16
7

=2;

(2)
13
15
÷
39
45
×
3
10

=
13
15
×
45
39
×
3
10

=
3
10


(3)(
5
6
-
2
3
)×
9
10

=
1
6
×
9
10

=
3
20


(4)1-
7
9
÷
7
8

=1-
7
9
×
8
7

=1-
8
9

=
1
9


(5)(0.75-
3
16
)×(
2
9
+
1
3
),
=(
3
4
-
3
16
)×
5
9

=
9
16
×
5
9

=
5
16


(6)
7
16
-
1
2
×
7
8

=
7
16
-
7
16

=0.
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