Your child has now learnt and eligible to learn many new things. The ancient Roman numbers are still very widely used in some places, especially on the face of the clock. Children have to learn to read the roman numbers to be able to read time on the clock. Roman numbers will be much more fun for your kid to write than the normal numbers. It will serve as a fun break for your child when he is getting frustrated or discouraged with his math concepts.
What you need to know
Although it may seem like such a waste of time but learning the Roman numbers will actually help your child in better numbers understanding. Roman numbers are more symbolic and kids at this age have a better perception of symbolic representation. It gives them a different way to think about numbers that for many kids, is easier.