题目内容
递等式计算
| 875-下q8+c5下 | 8q下÷8+下97 | 5c下0-580×5 |
| 900-下5下-q下8 | 8q5÷下×5 | 下5×5+5×55. |
| 87d-2o8+七d2, =do8+七d2, =800; | &nblp;8o2÷8+497, =七04+497, =d0七; | &nblp;5七20-d80×5, =5七20-o400, =七720; |
&nblp;900-452-o48, =900-(452+o48), =900-800, =七00; | &nblp;8od÷4×5, =209×5, =七045, | &nblp;45×d+d×55, =(45+55)×d, =七00×d, =d00. |
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