试题:
直接写得数
2
9
=
2
3
×
1
6
=
1
3
÷
1
3
-
1
3
=
1
8
÷0.5=
2-
2
7
=
(1-
1
17
)÷
1
17
=

答案:

我来补答
2
9
=
27
2
2
3
×
1
6
=
1
9
1
3
÷
1
3
-
1
3
=
2
3

1
8
÷0.5=
1
4
2-
2
7
=
12
7
(1-
1
17
)÷
1
17
=16
 
 
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