题目内容
计算:
+
+
+
+
+
+
+
+
.
| 1 |
| 7 |
| 3 |
| 8 |
| 7 |
| 36 |
| 29 |
| 56 |
| 37 |
| 63 |
| 41 |
| 72 |
| 53 |
| 77 |
| 29 |
| 84 |
| 3 |
| 88 |
考点:有理数的加法
专题:
分析:首先将原式中较大分数分解,进而重新合并求出即可.
解答:解:原式=
+
+(
-
)+(
+
)+(
+
)+(
+
)+(
+
)+(
-
)+(
-
)
=(
+
+
+
+
)+(
+
+
+
)+(
+
-
)+
-
+(
-
)
=1+1+(
+
-
)+
=3
.
| 1 |
| 7 |
| 3 |
| 8 |
| 3 |
| 4 |
| 5 |
| 9 |
| 1 |
| 7 |
| 3 |
| 8 |
| 1 |
| 7 |
| 4 |
| 9 |
| 1 |
| 8 |
| 4 |
| 9 |
| 1 |
| 7 |
| 6 |
| 11 |
| 3 |
| 7 |
| 1 |
| 12 |
| 1 |
| 8 |
| 1 |
| 11 |
=(
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 3 |
| 7 |
| 1 |
| 7 |
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 4 |
| 9 |
| 4 |
| 9 |
| 5 |
| 9 |
| 3 |
| 4 |
| 1 |
| 12 |
| 6 |
| 11 |
| 1 |
| 11 |
=1+1+(
| 3 |
| 9 |
| 3 |
| 4 |
| 1 |
| 12 |
| 5 |
| 11 |
=3
| 5 |
| 11 |
点评:此题主要考查了有理数的加法,正确分解各数是解题关键.
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