题目内容
1998÷1998
.
| 1998 |
| 1999 |
1998÷1998
,
=1998÷
,
=1998÷
,
=1998×
,
=
.
| 1998 |
| 1999 |
=1998÷
| 1998×1999+1998 |
| 1999 |
=1998÷
| 1998×2000 |
| 1999 |
=1998×
| 1999 |
| 1998×2000 |
=
| 1999 |
| 2000 |
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