问题 解答题
直接写出得数:
12×
2
3
=
②1-54%=
2
5
÷
2
5
=
0.5+
1
4
=
3
8
×
4
21
=
8
9
÷4
=
7+
5
9
=
3.5÷
1
2
=
3
5
÷
6
5
=
2
5
+
5
6
-0.4
=
答案

12×
2
3
=8,
②1-54%=0.46,
2
5
÷
2
5
=1,
0.5+
1
4
=0.75,
3
8
×
4
21
=
1
14
8
9
÷4
=
2
9
7+
5
9
=7
5
9
3.5÷
1
2
=7,
3
5
÷
6
5
=
1
2
2
5
+
5
6
-0.4
=
5
6

解答题
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