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Three Quarters of a Cake
Age 11 · Maths
Open to everyone until Monday, November 16
To keep it, print it while it is open.
A cake cut into 4 equal slices shows quarters, and taking 3 of them gives three quarters, written 3/4. A fraction is also a division: 3/4 means 3 divided by 4, just like sharing 3 cakes fairly between 4 people.
In the picture
- The whole cake: cut into 4 equal parts
- Three slices on the plate: 3/4 of the cake
- One slice left in the tin: 1/4 of the cake
Examples
- Sharing 3 pizzas equally among 4 friends gives each friend 3/4 of a pizza.
- Three quarters of an hour is 45 minutes, because 60 ÷ 4 = 15 and 3 × 15 = 45.
Key takeaways
- a/b means a divided by b, so 3/4 = 3 ÷ 4.
- To find 3/4 of a quantity, divide it by 4, then multiply by 3.
Quiz: Three Quarters of a Cake (Age 11)
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What does the fraction 3/4 mean as a division?
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What is 3/4 of 12?
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If 3 cakes are shared fairly between 4 people, how much cake does each person get?
The answers, each with its explanation, are in the app. This quiz is free there while the lesson is in the free week.
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