| 用递等式计算: (841-41)÷25×4 560÷[490÷(34+36)] 360÷(30+30)×2 224÷[(2+6)×2]. |
| (1)(841-41)÷25×4 =800÷25×4 =32×4 =128 (2)560÷[490÷(34+36)] =560÷[490÷70] =560÷7 =80 (3)360÷(30+30)×2 =360÷60×2 =6×2 =12 (4)224÷[(2+6)×2] =224÷[8×2] =224÷16 =14 |
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