题目内容
| 1 |
| 99 |
| 2 |
| 99 |
| 3 |
| 99 |
| 4 |
| 99 |
| 5 |
| 99 |
| 97 |
| 99 |
| 98 |
| 99 |
| 1 |
| 99 |
| 2 |
| 99 |
| 3 |
| 99 |
| 4 |
| 99 |
| 5 |
| 99 |
| 97 |
| 99 |
| 98 |
| 99 |
=
| (1+98)×98÷2 |
| 99 |
=
| 99×98÷2 |
| 99 |
=98÷2,
=49.
故答案为:49.
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题目内容
| 1 |
| 99 |
| 2 |
| 99 |
| 3 |
| 99 |
| 4 |
| 99 |
| 5 |
| 99 |
| 97 |
| 99 |
| 98 |
| 99 |
| 1 |
| 99 |
| 2 |
| 99 |
| 3 |
| 99 |
| 4 |
| 99 |
| 5 |
| 99 |
| 97 |
| 99 |
| 98 |
| 99 |
| (1+98)×98÷2 |
| 99 |
| 99×98÷2 |
| 99 |