题目内容

脱式计算.
(1)
1
2
+5
1
3
÷1
1
3

(2)(9.3×
5
6
-7.3)÷2
1
4

(3)3
4
5
×3.5-3
4
5

(4)5
1
2
×5
2
7
+3
5
7
×5.5+11÷2
(5)
7
12
-
3
8
+5.375
(6)2.75×101-2
3
4
(1)
1
2
+5
1
3
÷1
1
3

=
1
2
+
16
3
×
3
4

=
1
2
+4,
=4
1
2


(2)(9.3×
5
6
-7.3)÷2
1
4

=(
93
10
×
5
6
-7.3)×
4
9

=(
31
4
-
73
10
)×
4
9

=(
155
20
-
146
20
)×
4
9

=
9
20
×
4
9

=
1
5


(3)3
4
5
×3.5-3
4
5

=(3.5-1)×3
4
5

=2.5×
19
5

=9.5;

(4)5
1
2
×5
2
7
+3
5
7
×5.5+11÷2,
=5.5×5
2
7
+3
5
7
×5.5+5.5,
=(5
2
7
+3
5
7
+1)×5.5,
=10×5.5,
=55;

(5)
7
12
-
3
8
+5.375,
=
7
12
-0.375+5.375,
=
7
12
+(5.375-0.375),
=
7
12
+5,
=5
7
12


(6)2.75×101-2
3
4

=2.75×101-2.75,
=(101-1)×2.75,
=100×2.75,
=275.
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