题目内容

3000÷24+103×32
10.8×(
2
3
+
5
6
+
4
9

2.36÷4+4.58×0.25+1
3
50
×
1
4

4.5+5.5×3.6×0.1
(3.25-0.8×
5
8
)÷(6
1
4
-3.5)
(5
1
2
-2.75)÷[(
2
7
+2
1
2
)×
7
13
].
(1)3000÷24+103×32
=125+4160
=4285;

(2)10.8×(
2
3
+
5
6
+
4
9

=10.8×
2
3
+10.8×
5
6
+10.8×
4
9

=7.2+9+4.8
=21;

(3)2.36÷4+4.58×0.25+1
3
50
×
1
4

=2.36×
1
4
+4.58×
1
4
+1
3
50
×
1
4

=(2.36+4.58+1
3
50
)×
1
4

=8×
1
4

=2;

(4)4.5+5.5×3.6×0.1
=4.5+19.8
=24.3;

(5)(3.25-0.8×
5
8
)÷(6
1
4
-3.5)
=(3.25-0.5)÷2.75
=2.75÷2.75
=1;

(6)(5
1
2
-2.75)÷[(
2
7
+2
1
2
)×
7
13
].
=2.75÷[
39
14
×
7
13
].
=
11
4
×
2
3

=
11
6
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