103= one hundred and three
OR one oh three OR one zero three if you are saying them over the phone
109 = one hundred and nine
OR one oh nine OR one, zero, nine if you are saying them over the phone
253= two hundred and fifty three
OR two, five, three
456= four hundred and fifty six OR four, five,six
103,009= one hundred and three thousand and nine OR one, zero, three, zero, zero nine OR one, oh, three, double oh, nine.