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75 19 75简便计算

=75x(99+1)=75*100=7500

75乘19加75乘80加75 =75 x (19+80+1) =75x100 =7500采纳哦

75*75=(100-25)^2=100^2-2*25*100+25^2=10000-5000+625=5625

(75+75+75+75)*25=75*4*25=75*(4*25)=75*100=7500

15*15=1*(1+1)*100+25=22525*25=2*(2+1)*100+25=62535*35=3*(3+1)*100+25=122545*45=4*(4+1)*100+25=202555*55=5*(5+1)*100+25=302565*65=6*(6+1)*100+25=422575*75=7*(7+1)*100+25=562585*85=8*(8+1)*100+25=722595*95=9*(9+1)*100+25=9025

用简便方法计算95*19-75*19=(95-75)*19=20*19=380

75*27 +19*75简便计算=(27+19)x75=46x75=(48-2)x25x3=48x25x3-2x25x3=12x(4x25)x3-150=36x100-150=3600-150=3450祝学习进步.

125乘75+75乘75 =(125+75)x75=200x75=15000

75* 92 +9x75一75简便计算75* 92+ 9x75一75=75*(92+9-1)=75*100=7500

201*75-75=75x(201-1)=75x200=15000 朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!!朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问.谢谢.

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