Did you know that Triathlon is one the toughest races in the world. You have to run, ride a bicycle and swim. People prepare for it for months. Here is the preparation plan for my friend. Can you fill the gaps
Math Skills
Addition of Lengths of 1 unit (km, m, cm or mm) with carry.
Subtraction of Lengths of 1 unit (km, m, cm, mm) with borrowing.