问题 解答题
下面各题怎样算简便就怎样算.
18
35
÷0.6×
2
3

5
17
÷9+
1
9
×
12
17

2-
6
13
÷
9
26
-
2
3
答案

(1)

18
35
÷0.6×
2
3

=

6
7
×
2
3

=

4
7

(2)

5
17
÷9+
1
9
×
12
17

=

5
17
×
1
9
+
1
9
×
12
17

=(

5
17
+
12
17
)×
1
9

=1×

1
9

=

1
9

(3)2-

6
13
÷
9
26
-
2
3

=2-

4
3
-
2
3

=2-(

4
3
+
2
3
),

=2-2,

=0.

选择题
单项选择题 B型题