题目内容
| (1)274+156______274-156 | 8×9______8×9×2 |
| (2)543-210______643-210 | 459+136______459+163 |
| (3)142+127______227+42 | 350+150______350+0 |
| (4)348-256______348-156 | 81÷9______72÷8. |
| (1)274+156>274-156 | 8×9<8×9×2 |
| (2)543-210<643-210 | 459+136<459+163 |
| (3)142+127=227+42 | 350+150>350+0 |
| (4)348-256<348-156 | 81÷9=72÷8. |
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