it depends whether it is a fraction or division:Fractions are spoken like this:1/2 half 1/3 one third 1/4 one quarter 4/10 four tenths. four tenths equals two fifths (4/10 = 2/5)four tenths = zero point four (point=".")four tenths = point fouror you could sayfour over ten = point four / zero point fourfour divided by ten = point four / zero point fourdivided = "/"