Age from Birth Year
About this exercise
Working out an age from a year of birth — a subtraction with a real-world meaning.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- Tom was born in 2011. How old is Tom in 2024?
- Peter was born in 1983. How old is Peter in 2026?
- Lucy was born in 2000. How old is Lucy in 2023?
- Lucy was born in 2001. How old is Lucy in 2025?
Try it yourself first — open a section below only if you get stuck.
How to solve it
Subtract the year of birth from the year you are asked about.
Worked example
Someone born in 1988 turns 2023 - 1988 = 35 during 2023.
Common mistake
Taking the two years in the wrong order. The later year comes first, otherwise the age comes out negative.