1024÷16X3 =64x3 =192 164一13X5十85 =164-65+85 =164+(85-65) =164+20 =184 128一6X8÷16 =128-48÷16 =128-3 =125 40X2O一200 =800-200 =600
简便计算:43×17+47×17+91×83,5秒心算10秒脱式,挑战计算器
1024÷16*10
=64x10
=640
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