题目内容

计算下面各题,能简便的要简便.
1
6
×
2
3
÷(
4
5
-
8
15
)
2
7
÷
8
35
+
35
8
×
3
7
62.5%×15+2×
5
8
-5÷8
(
1
3
+
1
4
)÷(8+1÷25%)
(1)
1
6
×
2
3
÷(
4
5
-
8
15

=
1
6
×
2
3
÷
4
15

=
5
12


(2)
2
7
÷
8
35
+
35
8
×
3
7

=
2
7
×
35
8
+
35
8
×
3
7

=(
2
7
+
3
7
)×
35
8

=
5
7
×
35
8

=3
1
8


(3)62.5%×15+2×
5
8
-5÷8
=0.625×15+2×
5
8
-
5
8

=(15+2-1)×
5
8

=10;

(4)(
1
3
+
1
4
)÷(8+1÷25%)

=(
1
3
+
1
4
)÷(8+4),
=(
1
3
+
1
4
)÷12,
=
7
12
÷12,
=
7
144
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