What is larger 77.7 or 77 and 7 hundredths?

77.7 is larger than 77 and 7 hundredths. When comparing numbers, the digit in the tenths place is more significant than the digit in the hundredths place. In this case, 77.7 has a value of 77 and 7 tenths, which is greater than 77 and 7 hundredths.