2187-(1432-3113)简便算法
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![2187-(1432-3113)简便算法](/uploads/image/z/203810-50-0.jpg?t=2187-%EF%BC%881432-3113%EF%BC%89%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95)
2187-(1432-3113)简便算法
2187-(1432-3113)简便算法
2187-(1432-3113)简便算法
2187-(1432-3113)
=2187-1432+3113
=(2187+3113)-1432
=6300-1432
=4868
2187-(1432-3113)
=2187-1432+3113
=2187+3113-1432
=5300-1432
=5300-1300-132
=4000-132
=3868