早教吧 育儿知识 作业答案 考试题库 百科 知识分享

(2012•重庆)直接写出得数2.1÷0.007=357-198=7.38+0.52=516×815=(35+14)×20=49÷815=3138×72513÷3138=1735÷2541×(89-89)=3.5-6.5-3.5+6.5=5-21417-1317=

题目详情
(2012•重庆)直接写出得数
2.1÷0.007=
357-198=
7.38+0.52=
5
16
×
8
15
=
3
5
+
1
4
)×20=
4
9
÷
8
15
=
31
3
8
×72
5
13
÷31
3
8
=
17
35
÷
25
41
×(
8
9
-
8
9
)=
3.5-6.5-3.5+6.5=
5-2
14
17
-1
3
17
=
▼优质解答
答案和解析
2.1÷0.007=300;
357-198=159;
7.38+0.52=7.9;
5
16
×
8
15
=
3
2

3
5
+
1
4
=
17
20

4
9
÷
8
15
=
5
6

31
3
8
×72
5
13
÷31
3
8
=72
5
13

17
35
÷
25
41
×(
8
9
-
8
9
)=0
3.5-6.5-3.5+6.5=0
5-2
14
17
-1
3
17
=1.