468-132+132-68用简便算法怎么算
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![468-132+132-68用简便算法怎么算](/uploads/image/z/100947-3-7.jpg?t=468-132%2B132-68%E7%94%A8%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E6%80%8E%E4%B9%88%E7%AE%97)
468-132+132-68用简便算法怎么算
468-132+132-68用简便算法怎么算
468-132+132-68用简便算法怎么算
(468-68)+(132-132)=400
-132和+132得0,式子就变成468-68,这样就得400了
-132+132 等于没加嘛! 468-68=400
468-132+132-68
=468-(132-132)-68
=468-68
=400