Назовите множители, на которые нужно умножить числитель и знаменатель дроби, чтобы записать её в виде десятичной:
a) 1/2 ⋅ 2 ⋅ 5 ; 1/2 ⋅ 5 ⋅ 5 ⋅ 5 ; 7/2 ⋅ 2 ⋅ 2 ; 3/ 2 ⋅ 2 ⋅ 5 ⋅ 5 ⋅ 5 ⋅ 5 ;
б) 1/2 ⋅ 5 ⋅ 5 ; 1/2 ⋅ 2 ⋅ 2 ⋅ 5 ; 9/5 ⋅ 5 ⋅ 5 ; 11/2 ⋅ 2 ⋅ 2 ⋅ 2 ⋅ 5 ⋅ 5.