FractionagonsCalculate the missing fractions in these partly completed arithmagon puzzles. 
Complete the fractionagons so that the fractions in the rectangles are the sums of the fractions at the vertices of the triangles. Use the forward slash / to type a fraction. Give answers in their lowest terms.
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Arithmagons  The same sort of puzzle but with numbers not algebra.
Level 1  Sums of simple fractions
Level 2  Sums of fractions where one denominator is not a multiple of the other.
Level 3  Sums of mixed numbers.
Level 4  Multiplication of fractions.
Level 5  Multiplication of mixed numbers.
Algebragons  Different topic, same structure.
More Fractions including lesson Starters, visual aids, investigations and selfmarking exercises.
Use the forward slash / to type a fraction then the right arrow or tab key to end the fraction.
For example: Type 1/2 to get ½.
Fractions should be given in their lowest terms.
All answers are positive.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
Here are some suggestions for how you may solve the puzzles in which only the three values in the rectangles are given (the last question in levels three and above):
Replace 'sum' with 'product' if the operation is multiplication.
This was found by Ann Roberts, a Transum subscriber, who wrote with this method of solving an arithmagon with 18, 15 and 11 in the rectangles. It also works for fractions.
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