问题 解答题
口算下列各题.
9.9+0.01=
0.08×0.5=1.25×0.5×0.8=
2
3
+
1
4
=
4
3
-
4
7
-
3
7
=
7
11
+
1
4
-
7
11
+
7
11
=
答案

9.9+0.01=9.91,0.08×0.5=0.04,1.25×0.5×0.8=0.5,
2
3
+
1
4
=
11
12
4
3
-
4
7
-
3
7
=
1
3
7
11
+
1
4
-
7
11
+
7
11
=
39
44

多项选择题
判断题