Complete the sentences with the prepositions below. 1 Stephen gave his sister a big bunch of roses to make up for forgetting her birthday.

1)90:18=5(руб)-1 ручка
2)16*5=80(руб)-16 тетрадей
3)20*5=100(руб)-20 тетрадей))

90/18=5(р)- цена одной ручки
16x5=80(р)-цена 16 тетрадей
20x5=100(р)-цена 20 тетрадей