第30页

信息发布者:
4
8
6
5
2
9
4
5
8
2
6
9
9
10
15
1015
3
2
8
5
7
3
5
2
7
8
8
9
8
8.98
10
21
10
21
10
21
$\dfrac{31}{35}$
=136+300+2
=436+2
=438
=(8.3+1.7)+(0.15+0.85)
=10+1
=11
=$(\dfrac{7}{8}+\dfrac{1}{8})-(\dfrac{4}{5}+\dfrac{1}{5})$
=1-1
=0