Числительные

1/2 - a half

1/3 - a / one third

3/4 - three quarters

2/9 - two ninths

0.25 - zero / nought point two five

2.456 - two point four five six

7.089 - seven point o[ou] eight nine

.7 - point seven

Note!

простая дробь - vulgar fraction

десятичная дробь - decimal (fraction)

правильная [неправильная] дробь - proper [improper] fraction

непрерывная дробь - continued fraction