ronglove蓉
幼苗
共回答了31个问题采纳率:93.5% 举报
(1)101×
99
102
=(102-1)×
99
102
=102×
99
102 -
99
102
=99-
99
102
=98
1
34
(2)(4
5
6 -3
3
4 )÷(
3
14 +
2
7 )
= 1
1
12 ÷
7
14
=
13
12 ×2
=
13
6 ;
(3)(0.92+
2
25 )÷(4-2
7
9 )
= (
23
25 +
2
25 )÷1
2
9
= 1×
9
11
=
9
11 ;
(4)36×(
2
3 +
1
6 -
3
4 )
= 36×
2
3 +36×
1
6 -36×
3
4
=24+6-27
=3;
(5)
13
8 ×
3
7 +
3
8 ×
3
7
=
3
7 ×(
13
8 +
3
8 )
=
3
7 ×2
=
6
7 ;
(6)
4
9 ÷〔
5
6 -(
1
6 +
1
3 )〕
=
4
9 ÷(
5
6 -
1
6 -
1
3 )
=
4
9 ÷
1
3
=
4
9 ×3
=
4
3 .
1年前
4