问题 解答题
直接写出得数
8×1.25=
10-2.8-5.2=1-
2
3
=
1
3
-
1
4
=
25×11=0.07×100=2.1-1.9=0.27×10=
7
9
+
4
9
=
1-
1
2
-
1
3
=
1
5
+
3
10
=
2
3
+
1
5
=
答案

8×1.25=1010-2.8-5.2=21-
2
3
=
1
3
1
3
-
1
4
=
1
12
25×11=2750.07×100=72.1-1.9=0.20.27×10=2.7
7
9
+
4
9
=1
2
9
1-
1
2
-
1
3
=
1
6
1
5
+
3
10
=
1
2
2
3
+
1
5
=
13
15

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