99^2=9801 999^2=998001 9999^2=99980001 99999^2=9999800001

99^2=9801 999^2=998001 9999^2=99980001 99999^2=9999800001 99=9801 999=998001 9999=99980001 99999=9999800001 你发现了什么规律 99×99=9801 999×999=998001 的规律 99的2次方＝9801；999的2次方＝998001；9999的2次方＝9998001；99999的2次方＝999980 99999/2+9999/2+999/2+99/2+9/2= 9+99+999+9999+9999+99999=? 9+99+999+9999+99999 = = 9+99+999+9999+99999=? 谁知道9 1/7+99 2/7+999 3/7+9999 4/7+99999 5/7+999999 6/7= 9*9=81 99*99=9801 999*999=998001 100个9*100个9=?n个9*n个9=? 乘9等于81 99乘99等于9801 999乘999等于998001 9999乘9999等于99980001,这些算式有 9999999+999999+99999+9999+999+99+9=