Найдите произведение: е)0,01*100=? ж)0,7*0,001=? з)100*0,09=? и)0,3*0,3*0,3=?

е ) 0 , 01 * 100 = 1 * 10 ^ ( - 2 ) * 100 = 10 ^ ( - 2 ) * 100 = 10 ^ ( - 2 ) * 10 ^ 2 = 10 ^ ( - 2 + 2 ) = 10 ^ 0 = 1 ; ж ) 0 , 7 * 0 , 001 =7 * 10 ^ ( - 1 ) * 0 . 001 = 7 * 10 ^ ( - 1 ) * 10 ^ ( - 3 ) = 7 * 10 ^ ( - 1 + ( - 3 ) ) = 7 * 10 ^ ( - 1 - 3 ) = 7 * 10 ^ ( - 4 ) = 7 * 0 . 0001 = 0 .0007 ;з ) 100 * 0 , 09 = 10 ^ 2 * 0 . 09 = 10 ^ 2 * 9 * 10 ^ ( - 2 ) = 9 * 10 ^ ( 2 - 2 ) = 9 * 10 ^ 0 = 9 * 1 = 9 ;и ) 0 , 3 * 0 , 3 * 0 , 3 = 0 . 09 * 0 . 3 = 0 . 027.