问题 解答题
直接写出得数.
5
6
-
1
5
=
2.1×99=14
5
9
-10
=
0.25+
3
4
=
1
39
+
5
13
=
5
9
+
7
9
=
6.3+2.75=5-1
3
4
=
2
1
4
+
4
5
=
1
5
-
1
7
=
答案

5
6
-
1
5
=
19
30
2.1×99=207.9,14
5
9
-10
=4
5
9
0.25+
3
4
=1,
1
39
+
5
13
=
16
39
5
9
+
7
9
=
4
3
6.3+2.75=9.05,5-1
3
4
=3
1
4
2
1
4
+
4
5
=3
1
20
1
5
-
1
7
=
2
35

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