问题 解答题
(1)
12
×
2
2
÷5
3

(2)(3
48
+
12
-2
27
)÷
3

(3)(
48
-
1
8
)-(3
1
3
-
0.5
答案

(1)

12
×
2
2
÷5
3

=2

3
×
2
2
÷5
3

=

2
5

(2)(3

48
+
12
-2
27
)÷
3

=(12

3
+2
3
-6
3
)÷
3

=8;

(3)(

48
-
1
8
)-(3
1
3
-
0.5

=4

3
-
2
4
-
3
+
2
2

=3

3
+
2
4

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