问题 解答题
计算:
(1)2
12
+3
48

(2)
32
+3
1
2
-2
1
8

(3)
15×5
-
48
-
27
3
答案

(1)2

12
+3
48

=2×2

3
+3×4
3

=4

3
+12
3

=16

3

(2)

32
+3
1
2
-2
1
8

=4

2
+3×
2
2
-2×
2
4

=4

2
+
3
2
2
-
2
2

=5

2

(3)

15×5
-
48
-
27
3

=5-4-3

=5-7

=-2.

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