Python can do fractions so you can check your homework answers. Use the fractions module, and its Fraction object, specifying the numerator and denominator. To get one-half, type fractions.Fraction(1, 2). For four-fifths, type fractions.Fraction(4, 5):

>>> import fractions >>> one_half = fractions.Fraction(1, 2) >>> one_fifth = fractions.Fraction(1, 5)

Fractions can do normal fraction calculations (including multiplication and division) for you:

>>> one_half+one_fifth Fraction(7, 10) >>> one_half-one_fifth Fraction(3, 10) >>> one_half*one_fifth Fraction(1, 10) >>> one_half/one_fifth Fraction(5, 2)