题目内容

能简算就要简算.
5
8
×
11
10
+
3
8
÷
10
11
②1.25×7×0.8③7.28-3.14+1.72-2.86
11
8
÷[
9
10
-(
2
5
+
1
4
)]
⑤(
1
12
+
1
9
-
3
18
)×36
1
2
+
1
4
+
1
8
+
1
16
+
1
32
5
8
×
11
10
+
3
8
÷
10
11

=
5
8
×
11
10
+
3
8
×
11
10

=(
5
8
+
3
8
)×
11
10

=1×
11
10

=
11
10


②1.25×7×0.8
=1.25×0.8×7,
=1×7,
=7;

③7.28-3.14+1.72-2.86
=7.28+1.72-(3.14+2.86),
=9-6,
=3;

11
8
÷[
9
10
-(
2
5
+
1
4
)]
=
11
8
÷[
9
10
-
13
20
],
=
11
8
÷
1
4

=
11
2


⑤(
1
12
+
1
9
-
3
18
)×36
=
1
12
×36+
1
9
×36-
3
18
×36,
=3+4-6,
=1;

1
2
+
1
4
+
1
8
+
1
16
+
1
32

=
16
32
+
8
32
+
4
32
+
2
32
+
1
32

=
31
32
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