题目内容
1-
=______,
-
=______,
-
=______,
-
=______,
-
=______.
从上面的计算你发现了什么?用你的发现计算下题.
+
+
+
+
+
.
1 |
3 |
1 |
3 |
1 |
5 |
1 |
5 |
1 |
7 |
1 |
7 |
1 |
9 |
1 |
9 |
1 |
11 |
从上面的计算你发现了什么?用你的发现计算下题.
2 |
3 |
2 |
15 |
2 |
35 |
2 |
63 |
2 |
99 |
2 |
143 |
1-
=
,
-
=
,
-
=
,
-
=
,
-
=
.
+
+
+
+
+
,
=(1-
)+(
-
)+(
-
)+(
-
)+(
-
)+(
-
),
=1-
+
-
+
-
…+
-
,
=1-
,
=
;
故答案为:
,
,
,
,
.
1 |
3 |
2 |
3 |
1 |
3 |
1 |
5 |
2 |
15 |
1 |
5 |
1 |
7 |
2 |
35 |
1 |
7 |
1 |
9 |
2 |
63 |
1 |
9 |
1 |
11 |
2 |
99 |
2 |
3 |
2 |
15 |
2 |
35 |
2 |
63 |
2 |
99 |
2 |
143 |
=(1-
1 |
3 |
1 |
3 |
1 |
5 |
1 |
5 |
1 |
7 |
1 |
7 |
1 |
9 |
1 |
9 |
1 |
11 |
1 |
11 |
1 |
13 |
=1-
1 |
3 |
1 |
3 |
1 |
5 |
1 |
5 |
1 |
7 |
1 |
11 |
1 |
13 |
=1-
1 |
13 |
=
2 |
13 |
故答案为:
2 |
3 |
2 |
15 |
2 |
35 |
2 |
63 |
2 |
99 |
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