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# Sharpen Your Skills

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Practising a mathematical skill doesn't need to be tedious... dust off your angle, algebra and adding fractions skills, and put them to good use solving this set of problems!

Age 11 to 14

Challenge Level

Choose some fractions and add them together. Can you get close to 1?

Age 11 to 14

Challenge Level

Can you find triangles on a 9-point circle? Can you work out their angles?

Age 11 to 16

Challenge Level

Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?

Age 11 to 14

Challenge Level

The answer is $5x+8y$... What was the question?