简便计算:532+783-232+117

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简便计算:532+783-232+117
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简便计算:532+783-232+117
简便计算:532+783-232+117

简便计算:532+783-232+117
532+783-232+117
=(532-232)+(783+117)
=300+900
=1200

(532-232﹜+(783+117)
﹦300+900
﹦1200