问题 填空题
7
8
吨比
1
2
吨多______%,
1
5
吨比
7
10
吨少______%.
答案

(

7
8
-
1
2
1
2

=

3
8
×2,

=0.75,

=75%;

(

7
10
-
1
5
7
10

=

5
10
×
10
7

=

5
7

≈0.714,

=71.4%;

答:

7
8
吨比
1
2
多75%,
1
5
吨比
7
10
吨少
71.4%.

故答案为:75,71.4.

单项选择题
单项选择题