Question: is 7/10 rational or irrational?
Answer: Because 7.3 means 7310 7 3 10 , we can write it as an improper fraction, 7310 . So 7.3 is the ratio of the integers 73 and 10 . It is a rational number. In general, any decimal that ends after a number of digits such as 7.3 or −1.2684 is a rational number.