题目内容

计算下面各题,能简算的要简算.
3
8
×
5
11
+
5
8
÷
11
5

4×3.6×2.5
(3.8-3.6÷2)×
1
2

9
10
÷[
1
2
×(
6
5
-
3
10
)]
(1)
3
8
×
5
11
+
5
8
÷
11
5

=
3
8
×
5
11
+
5
8
×
5
11

=(
3
8
+
5
8
)×
5
11

=1×
5
11

=
5
11


(2)4×3.6×2.5,
=4×2.5×3.6,
=10×3.6,
=36;

(3)(3.8-3.6÷2)×
1
2

=(3.8-1.8)×
1
2

=2×
1
2

=1;

(4)
9
10
÷[
1
2
×(
6
5
-
3
10
)]

=
9
10
÷[
1
2
×
9
10
],
=
9
10
÷
9
20

=2.
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