问题 解答题
计算下面各题.
1
4
+
5
8
×
4
5
3
5
×
1
4
+
3
4
×
3
5
15×(
1
5
+
1
3
7
10
÷13+
12
13
×
7
10
答案

1
4
+
5
8
×
4
5

=

1
4
+
1
2

=

3
4

3
5
×
1
4
+
3
4
×
3
5

=

3
5
×(
1
4
+
3
4

=

3
5
×1

=

3
5

15×(

1
5
+
1
3

=15×

1
5
+15×
1
3

=3+5

=8;

7
10
÷13+
12
13
×
7
10

=

7
10
×(
1
13
+
12
13

=

7
10
×1

=

7
10

单项选择题
单项选择题