To round a number to the nearest tenth:
1. Look to the next smallest place value (the value in the hundredths)
2. If the digit in the hundredths is less than 5, you leave the digit in tenth as-is:
3. If the digit in the hundredrhs is greater than or equal to 5 you increase the value of the digit in tenths by one:
Then, two possible numbers that jade could be thinking of are: 16.53 and 16.48