Elementary school mathematics solution: a two-digit number with a zero at the end, and the three-digit number is 234 larger than the original two-digit number. What is this two-digit number?
Solution:; Adding a zero at the end of two digits is equivalent to the original 10 times. If the original number is regarded as the unit "1", then the current number is "10", so it is 9 "larger than the original number, and 9" is 234, so "1" is 234 divided by 9.