59000除以125怎么巧算(递等式)

问题描述:

59000除以125怎么巧算(递等式)

原式 = 59*1000÷125
= 59*8
= 60*8 - 8
= 480 -8
= 472

59000÷125
=59×1000÷125
=59×(1000÷125)
=59×8
=472

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59000÷125
=59×1000÷125
=59×(1000÷125)
=59×8
=(60-1)×8
=480-8
=472

原式=59x1000÷125=59×8=472

(1)59000/125(/是除号)
=59x1000/125
=59x(1000/125)
=59x8
=472
(2)59000/125
=(59000x8)/(125x8)
=472000/1000
=472

59000÷125
=59×1000÷125
=59×(1000÷125)
=59×8
=(60-1)×8
=60×8-1×8
=480-8
=472