题目内容
| 8 |
| 9 |
| 7 |
| 9 |
| 6 |
| 9 |
| 5 |
| 9 |
| 4 |
| 9 |
| 3 |
| 9 |
| 2 |
| 9 |
| 1 |
| 9 |
分析：
-
=
，然后与最后一个
相加，结果为
，然后再看乘除法，把除法改为乘法，约分计算，进而解决问题．
| 8 |
| 9 |
| 7 |
| 9 |
| 1 |
| 9 |
| 1 |
| 9 |
| 2 |
| 9 |
解答：解：
-
+
×
÷
÷
×
+
=
+
×
×
×
×
+
=
+
=
．
| 8 |
| 9 |
| 7 |
| 9 |
| 6 |
| 9 |
| 5 |
| 9 |
| 4 |
| 9 |
| 3 |
| 9 |
| 2 |
| 9 |
| 1 |
| 9 |
=
| 1 |
| 9 |
| 6 |
| 9 |
| 5 |
| 9 |
| 9 |
| 4 |
| 9 |
| 3 |
| 2 |
| 9 |
| 1 |
| 9 |
=
| 2 |
| 9 |
| 5 |
| 9 |
=
| 7 |
| 9 |
点评：此题的关键是通过乘除法的转化，通过约分，解决问题．
练习册系列答案
相关题目