Here's three. 2 7/10, 27/10, and 2.7.
2.7
Fifty-two and seven tenths.
2.7
In order to write seven and two tenths, a person should simply use the period between the two numbers as the "and." To write the number in numerical form, the number would appear as 7.2.
Two and seven tenths.
750.2
Seven and two tenths.
thirty-two and seven tenths
two hundred thirteen and seven tenths
42.7
twenty-two and seven tenths
Fifteen thousand, two hundred seven and three tenths.