It depended on the newspaper, but during the week, the typical newspaper cost between two and five cents (two cents in smaller cities; five cents in larger ones). The Sunday newspaper, however, was the largest edition of the week, and it might cost as much as ten cents in some of the major cities.
Cents are usually divided only to find a unit cost in manufacturing. The value would be written out "five and seven-hundredths cents." If this is US currency, the cents are the decimal part of the value. The spelling of $5.07 is "five dollars and seven cents."
In 1910, eggs averaged .27 cents a dozen, butter was about .30 cents a pound, and cereal was around .09 cents a box. A five pound sack of flour would be about 18 cents and milk would be 16 cents for a half gallon.