问题 解答题
口算:
2005-1998=
1.6×0.05=5.7÷0.19=0.125×0.7=
5
8
÷
2
3
=
2
3
÷6=
21
85
÷
35
34
=
40×
16
39
=
1
2
÷
1
3
=
3
4
×12=
17
38
×
19
51
=
7
25
×201-
7
25
=
答案

2005-1998=7,1.6×0.05=0.08,5.7÷0.19=30,0.125×0.7=0.0875,
5
8
÷
2
3
=
15
16
2
3
÷6=
1
9
21
85
÷
35
34
=
6
25
40×
16
39
=16
16
39
1
2
÷
1
3
=
3
2
3
4
×12=9,
17
38
×
19
51
=
1
6
7
25
×201-
7
25
=56.

单项选择题
单项选择题