59x99十99简便计算

嵇食娥5047简便方法125*99 和59x99=??? -
钟时尝15144487555 ______ 125x99=125x100-125=12500-125=1237559x99=59x100-59=5900-59=5841

嵇食娥5047简算 9乘以99加19 -
钟时尝15144487555 ______ 解:原式=9*99+19=9*99+10+9=9*100+10=900+10=910

嵇食娥50479x99十99的简便运算 -
钟时尝15144487555 ______ 9x99十99 =9x99+1x99 =99x(9+1) =99x10 =990

嵇食娥50479X99十9的最简便算法 -
钟时尝15144487555 ______ 原式 =9x99+9x1 =9x(99+1) =9x100 =900 供参考.

嵇食娥50472点5x(9点99十9点99十9点99十9点99)用简便运算 -
钟时尝15144487555 ______ 2点5x(9点99十9点99十9点99十9点99) =2点5x4*9.99 =40*(10-0.01) =400-0.4 =399.6

嵇食娥5047五百九十八加九十九简便方法脱式? -
钟时尝15144487555 ______ 598+99=597+1+99=597+100=697

嵇食娥5047简便计算59乘以99加56 -
钟时尝15144487555 ______ 59x99+56=59x100-59+56=5900-3=5897

嵇食娥5047598十99的简便运算. -
钟时尝15144487555 ______ 598十99的简便运算. 598十99 =598+100-1 =698-1 =697

嵇食娥504799x99十0.99简便计算 -
钟时尝15144487555 ______[答案] 99X99十99 =99X99十99X1 =99X(99十1) =99X100 =9900

嵇食娥5047l.9x99十0.l9的简便算法 -
钟时尝15144487555 ______ 解:l.9x99十0.l9=(2-0.1)(100-1)+0.19=200-2-10+0.1+0.19=188+0.29=188.29