简便算法234×27×37=?简便算法234×27×37=?
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简便算法234×27×37=?简便算法234×27×37=?
简便算法234×27×37=?
简便算法234×27×37=?
简便算法234×27×37=?简便算法234×27×37=?
234×27×37
=234×9×3×37
=234×(10-1)×111
=234×(10-1)×(100+10+1)
=(2340-234)×(100+10+1)
=2106×100+2106×10+2106
=210600+21060+2106
=231660+2106
=233766
234X37X3X9
=234X9X3X37X3
因为乘9可以用10-1来简算,乘111可以用乘100加乘10加乘1来简算
=234X(10-1)X111
=(2340-234)X111
=2106X111
=2106X100+2106X10+2106X1
=210600+21060+2106
=233766
234×27×37
=234×(30-3)×37
=(7020-702)×(40-3)
=6318×(40-3)
=252720-18954
=233766
234×27×37
=234×9×3×37
=234×(10-1)×111
=234×(10-1)×(100+10+1)
=(2340-234)×(100+10+1)
=2106×100+2106×10+2106
=210600+21060+2106
=231660+2106
=233766 234X37X3X9
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234×27×37
=234×9×3×37
=234×(10-1)×111
=234×(10-1)×(100+10+1)
=(2340-234)×(100+10+1)
=2106×100+2106×10+2106
=210600+21060+2106
=231660+2106
=233766 234X37X3X9
=234X9X3X37X3
因为乘9可以用10-1来简算,乘111可以用乘100加乘10加乘1来简算
=234X(10-1)X111
=(2340-234)X111
=2106X111
=2106X100+2106X10+2106X1
=210600+21060+2106
=233766
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