题目内容

(3+
3
0
÷
3
0
+3)-(2×
1
9
÷2×
1
9
)

9
1
3
+99
1
3
+999
1
3
+9999
1
3
+2
2
3

1
2012
+
2
2012
+
3
2012
+
0
2012
+…+
2011
2012
+
2012
2012
(v)(n+
n
4
÷
n
4
+n)-(7×
v
6
÷7×
v
6
)

=(n+v+n)-(7×
v
6
×
v
7
×
v
6
),
=7-
v
n6

=6
n九
n6


(2)4
v
n
+44
v
n
+444
v
n
+4444
v
n
+2
2
n

=v0-
2
n
+v00-
2
n
+v000-
2
n
+v0000-
2
n
+2
2
n

=v0+v00+v000+v0000+2
2
n
-
2
n
-
2
n
-
2
n
-
2
n

=vvvv0+0,
=vvvv0;

v
20v2
+
2
20v2
+
n
20v2
+
4
20v2
+…+
20vv
20v2
+
20v2
20v2

=
v+2+…+20v2
20v2

=
(v+20v2)×20v2÷2
20v2

=v006.九.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网