Before taking part in the quiz make sure you have a pencil or pen and a piece of paper ready for writing down your answers - better still, print off our answer sheet below. Use your mental maths ...
How Far Apart are the Dots? (a) Guess the distance between any two dots. How many centimetres is it? Now measure it with the help of a scale. Did you guess right? (b) Which two dots do you think are ...
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