题目内容
| 估算: 49×101 | 196×39 | 203×38 |
| 396×102 | 89×92 | 98×69. |
| 49×101≈5000; | 196×39≈8000; | 203×38≈8000; |
| 396×102≈40000; | 89×92≈8100; | 98×69≈7000. |
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题目内容
| 估算: 49×101 | 196×39 | 203×38 |
| 396×102 | 89×92 | 98×69. |
| 49×101≈5000; | 196×39≈8000; | 203×38≈8000; |
| 396×102≈40000; | 89×92≈8100; | 98×69≈7000. |