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99 55用简便方法计算

100

99x55 =(100-1)x55 =100x55-1x55 =5500-55 =5445

99*55+99=100*55+99-55=5544

你好原式=55*(27+72+1)=55*100=5500 33*99=33*(100-1)=33*100-33=3300-33=3267 望采纳!

55*99=55*(100-1)=5500-55=5445

55-5=50 99-9=90 50+90=140 140+5+9=154

(99+1)乘55 =100乘55 =5500

很简单,99X(55 1)=99X56=(100-1)X56=5600-56=5544

=[1000-1+1-(99+1)*9-99]/55=(1000-100-900+1)/55=1/55

=145+55-(200-2)+263=200-200+2+263=2+263=265~亲,如果你认可我的回答,请点击【采纳为满意回答】按钮~~手机提问的朋友在客户端上评价点【采纳回答】即可.~你的采纳是我前进的动力~~o(∩_∩)o,互相帮助,祝共同进步!

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