List

Algebra

Doplication
problem
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Doplication

Age
7 to 11
Challenge level
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We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?

Plenty of Pens
problem
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Plenty of Pens

Age
7 to 11
Challenge level
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Amy's mum gave her £2.50 to spend. She bought four times as many pens as pencils and was given 40p change. How many of each did she buy?

Domino sets
problem
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Domino Sets

Age
7 to 11
Challenge level
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How do you know if your set of dominoes is complete?

Diagonal Sums
problem
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Diagonal Sums

Age
7 to 14
Challenge level
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In this 100 square, look at the green square which contains the numbers 2, 3, 12 and 13. What is the sum of the numbers that are diagonally opposite each other? What do you notice?

Price Match
problem
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Price Match

Age
7 to 11
Challenge level
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Can you find pairs of differently sized windows that cost the same?

Different Deductions
problem
Favourite

Different Deductions

Age
7 to 11
Challenge level
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There are lots of different methods to find out what the shapes are worth - how many can you find?

Finding 3D Stacks
problem
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Finding 3D Stacks

Age
7 to 11
Challenge level
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Can you find a way of counting the spheres in these arrangements?