阿光头孙悟空
幼苗
共回答了19个问题采纳率:84.2% 举报
(1)5-
1
3 ÷
3
4 ×
9
10 ,
=5-
1
3 ×
4
3 ×
9
10 ,
=5-
2
5 ,
=4
3
5 ;
(2)(
1
15 +
2
17 )×15×17,
=
1
15 ×15×17+15×17×
2
17 ,
=17+30,
=47;
(3)[
1
5 +(2-0.47)÷
3
20 ]÷10.4,
=[
1
5 +
153
100 ×
20
3 ]×
5
52 ,
=[
1
5 +
51
5 ]×
5
52 ,
=
52
5 ×
5
52 ,
=1;
1年前
5