问题 解答题
直接写结果.
5
7
×
21
25
=
3
2
÷
2
3
=
1111÷11=4.6+4=1÷12.5%=
1
4
+
1
8
=
102-33=
5
9
-
5
6
+
4
9
=
10.8-9.9-
1
10
=
0.9×9+0.9=
5.38-(1.8+2.38)=121×29≈238÷41≈
1
4
×4÷
1
4
×4
=
2-2÷9=
1
5
+
1
5
+
1
5
+…+
1
5
a个
=
答案

5
7
×
21
25
=
3
5
3
2
÷
2
3
=
9
4
1111÷11=101,4.6+4=8.6,1÷12.5%=8,
1
4
+
1
8
=
3
8
102-33=73,
5
9
-
5
6
+
4
9
=
1
6
10.8-9.9-
1
10
=0.8,
0.9×9+0.9=9,
5.38-(1.8+2.38)=1.2,121×29≈3000,238÷41≈6,
1
4
×4÷
1
4
×4
=16,
2-2÷9=1
7
9
1
5
+
1
5
+
1
5
+…+
1
5
a个
=
a
5

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