问题 解答题
计算下面各题(能简算的要用简便方法算)
60×(
2
5
+
3
4
-
1
2
24
19
+
16
17
)×
1
8
+
15
17
1-[
1
6
+(
3
4
-
7
12
)]
5
8
×
11
10
+
3
8
÷
10
11
答案

60×(

2
5
+
3
4
-
1
2
),

=60×

2
5
+60×
3
4
-60×
1
2

=24+45-30,

=39;

24
19
+
16
17
)×
1
8
+
15
17

=

24
19
×
1
8
+
16
17
×
1
8
+
15
17

=

3
19
+
2
17
+
15
17

=

3
19
+1,

=1

3
19

1-[

1
6
+(
3
4
-
7
12
)],

=1-(

2
12
+
9
12
-
7
12
),

=1-

1
3

=

2
3

5
8
×
11
10
+
3
8
÷
10
11

=

5
8
×
11
10
+
3
8
×
11
10

=(

5
8
+
3
8
)×
11
10

=1

1
10

单项选择题
单项选择题