题目内容
递等式计算．
×
×
÷
×
×18÷
．
| 5 |
| 9 |
| 7 |
| 4 |
| 3 |
| 20 |
| 1 |
| 14 |
| 1 |
| 9 |
| 6 |
| 49 |
| 4 |
| 5 |
| 10 |
| 63 |
分析：依据四则运算顺序：从左到右计算即可解答．
解答：解：
×
×
=
×
=
；
÷
×
=
×
=
；
×18÷
=
×
=2
．
| 5 |
| 9 |
| 7 |
| 4 |
| 3 |
| 20 |
=
| 35 |
| 36 |
| 3 |
| 20 |
=
| 7 |
| 48 |
| 1 |
| 14 |
| 1 |
| 9 |
| 6 |
| 49 |
=
| 9 |
| 14 |
| 6 |
| 49 |
=
| 27 |
| 343 |
| 4 |
| 5 |
| 10 |
| 63 |
=
| 72 |
| 5 |
| 10 |
| 63 |
=2
| 2 |
| 7 |
点评：本题主要考查学生依据四则运算顺序正确进行计算的能力．
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