问题 解答题
直接写出得数.
1-9=
5
6
×120=
20×
1
5
=
5
7
×
2
5
=
5
17
×0=
3
5
÷3=
2
3
=
7
8
÷
7
8
=
3
4
×
3
4
=
1
4
+
1
3
=
1
4
+
2
3
=
3
5
-
1
2
=
4
5
-
2
3
=
答案

1-9=-8,
5
6
×120=100,
20×
1
5
=4,
5
7
×
2
5
=
2
7
5
17
×0=0,
3
5
÷3=
1
5
2
3
=6,
7
8
÷
7
8
=1,
3
4
×
3
4
=
9
16
1
4
+
1
3
=
7
12
1
4
+
2
3
=
11
12
3
5
-
1
2
=
1
10
4
5
-
2
3
=
2
15
故答案为:-8,100,4,
2
7
,0,
1
5
,6,1,
9
16
7
12
11
12
1
10
2
15

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