Johnny Leaper was born on the 29th February 2012.
1. On his third birthday, how old will he really be?
2. In which year will his age be the square of his birthday?
3. In which year will his age be the cube of his birthday?
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Previous Day  This starter is for 29 February  Next Day
1. 12 years
2. 2028
3. 2020
Teacher, do your students have
access to computers? 

Here is the URL for a concise version of this page without comments or answers.
Transum.org/go/?Start=February29
Here is the URL which will take them to a fantastic video that explains why some years have an extra leap day and what it is for.