# Autumn 2 Maths - Morning Extension Question

Why can seven seventeenths not be simplified any further? What may it have started from?

Six and seven fifths is the wrong answer to a question. Why is it incorrect? In which two ways should it be written?

If three fifths of a number is 9. What was the number we began with?

What is a percentage out of? Why would 2/50 be very easy to convert into a percentage?

Is it possible to give 110% of your energy to an activity?

a) What would be the answer to one and a half plus 2 and a quarter?

b) Why do I not have to change the whole number in this calculation?

What is 3 and a half multiplied by 4? Why doesn't the denominator change?

I am a 3D shape. I am not a polyhedron. I have one curved face. What am I?

I think of a number. I double it and then subtract 15. My answer is 13. What was the number I was thinking of at the beginning?

What does a letter represent in an equation?

If k is worth 12 what would be k + 3 be equal to?

What is 100mm as km?

The mean is 14. The set of data is made up of 3 numbers. What could they be?

What is one of the rules when using Roman Numerals?

The fraction of blue balls in a group of blue and red balls is 3/5. What would the ratio of bue balls to red balls be?

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