127+133+184+240的简便算法
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127+133+184+240的简便算法
127+133+184+240的简便算法
127+133+184+240的简便算法
127+133+184+240
=(127+133)+184+240
=(260+240)+184
=500+184
=684
127+133+184+240
=260+240+184
=500+184
=684
127+133+184+240
=(127+133)+240+184
=260+240+184
=500+184
=684
127+133=260+240=500+184=684