题目内容

计算下面各题,能简算的要简算
5
8
÷(
5
8
+
1
3

9
20
÷[
3
2
×(0.2+
4
5
)]
5
8
+
2
27
)×8+
11
27

57.5-4.25-15.75.
5
8
÷(
5
8
+
1
3
),
=
5
8
÷(
15
24
+
8
24
),
=
5
8
×
24
23

=
15
23



9
20
÷[
3
2
×(0.2+
4
5
)],
=
9
20
÷[
3
2
×
1],
=
9
20
×
2
3

=
3
10




③(
5
8
+
2
27
)×8+
11
27

=
5
8
×8
+
2
27
×8+
11
27

=5+
27
27

=6;


④57.5-4.25-15.75,
=57.5-(4.25+15.75),
=57.5-20,
=37.5;
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