Three fractions add together to give one ninth.
If all the question marks represent the same number, what is that number?
What if all the question marks represent different numbers?
Topics: Starter  Fractions  Investigations
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Previous Day  This starter is for 31 January  Next Day
See also the Starter called One Fifth and a related GCSE question.
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Show students how to create fractions in MS Word:
From the 'Insert' menu choose 'Object' then 'Microsoft Equation'
It's even easier with "Math Input Panel" which comes with Windows 7.
In Word 2013 you can find the equation editor in the Insert tab.
What is unique about this fraction sum?