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99乘以100分之99简便计算

99*99/100=98又1/100.简便计算过程如下:99*99/100=(100-1)*99/100=100*99/100-99/100=99-99/100=98又1/100 扩展资料:乘法简便计算常用规律:1)乘法交换律:

99*99/100= (100-1)*99/100= 100*99/100 - 99/100= 99 - 100/100 + 1/100= 98 + 1/100= 98.01

99*99/100=(100-1)*(100-1)/100=(10000-200+1)/100=9801/100=98.01 望采纳!

99x(99/100)=99x(100-1)/100=99x(1-1/100)=99-99/100=98.01

99x99% 99x99% 99x(1-0.01) (100-1)X0.99 =99x1-99x0.01 =100x0.99-1x0.99 =99-0.99 =99-0.099 =98.01 =98.01

99*100分之99=99x99/100=(100-1)(100-1)/100=100-2+1/100=98+1/100=98又1/100

99*100-99=9900-99=98019801*100-9801=980100-9801=970299

=(100-1)X99/100=100X99/100-99/100=99-99/100=98又1/100

原式=99*(1-0.01)=99-0.99=98.01

解:99乘以100分之98 =99x98/100 =(100-1)x98/100 =100x98/100-1x98/100 =98-98/100 =97又2/100

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