问题 解答题
直接写得数
1-
1
8
-
7
8
=
1
5
+
1
15
)×15=
72÷20%=
6
7
-
5
8
+
1
7
=
3
4
×
4
7
×14=
4
13
×
4
13
=
4
9
÷4÷
1
9
=
7
8
×9÷
7
8
=
答案

1-
1
8
-
7
8
=0,
1
5
+
1
15
)×15=4,
72÷20%=360,
6
7
-
5
8
+
1
7
=
3
8
3
4
×
4
7
×14=6,
4
13
×
4
13
=1,
4
9
÷4÷
1
9
=1,
7
8
×9÷
7
8
=9.

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