【计算下面各题,怎样简便怎样算.98+267+102631--查字典问答网
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  【计算下面各题,怎样简便怎样算.98+267+102631-74-26250×67×47400÷25÷488×12599×78+7829×38+1495÷23164÷4×9】

  计算下面各题,怎样简便怎样算.

  98+267+102631-74-26250×67×47400÷25÷488×12599×78+7829×38+1495÷23164÷4×9

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2020-07-3112:36
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梁朝虎

  ①98+267+102

  =98+102+267

  =200+267

  =467

  ②631-74-26

  =631-(74+26)

  =631-100

  =531

  ③250×67×4

  =(250×4)×67

  =1000×67

  =67000

  ④7400÷25÷4

  =7400÷(25×4)

  =7400÷100

  =74

  ⑤88×125

  =11×(8×125)

  =11×1000

  =11000

  ⑥99×78+78

  =(99+1)×78

  =100×78

  =7800

  ⑦29×38+1495÷23

  =1102+65

  =1167

  ⑧164÷4×9

  =41×9

  =369

2020-07-31 12:38:30
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