*This Math quiz is called 'Distance, Speed and Time Problems' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.*

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We all know that speed is something to do with distance and time, but can you remember how they are related? One way to remember it is to think of road speed limits. For instance, in towns the speed limit is 30 miles per hour. Speed = miles (Distance) per hour (Time). ‘Per’ means divide, so we have S = D/T. Once you have that it is a case of filling in what you know, to work out what you need.

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Always remember to apply a common sense check to your answer – for instance, if you are traveling at 80km/h, it doesn’t make sense that you will cover 160km in half an hour!

Another area that catches people out is converting between m/s and km/h. It is best to work through this in stages – work up from seconds to minutes, then to an hour. Then, scale that answer from meters to kilometers. If you try to do it all in one step you are likely to trip up!

A speed of 60 units per hour is always quite nice, as this means you cover one unit every minute. Remember that next time you are on a car journey, and want to know how long until you get there!

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