题目内容
计算:| 1 |
| 4 |
| 1 |
| 28 |
| 1 |
| 70 |
| 1 |
| 130 |
| 1 |
| 208 |
分析:直接根据有理数的加法运算法则,依次计算即可.
解答:解:
+
+
+
+
,
=
+
+
+
,
=
+
+
,
=
+
,
=
.
| 1 |
| 4 |
| 1 |
| 28 |
| 1 |
| 70 |
| 1 |
| 130 |
| 1 |
| 208 |
=
| 2 |
| 7 |
| 1 |
| 70 |
| 1 |
| 130 |
| 1 |
| 208 |
=
| 3 |
| 10 |
| 1 |
| 130 |
| 1 |
| 208 |
=
| 4 |
| 13 |
| 1 |
| 208 |
=
| 5 |
| 16 |
点评:本题主要考查有理数的加法运算,比较简单,细心即可.
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