This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.
Scroll down to see the complete collection, or explore our subcollections on Perimeter and Area in two dimensions, and Surface Area and Volume in three dimensions.
problem
Favourite
Matching Fractions, Decimals and Percentages
Age
7 to 14
Challenge level
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
problem
Favourite
Doughnut percents
Age
7 to 14
Challenge level
A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.
problem
Favourite
Fractions and Percentages Card Game
Age
11 to 16
Challenge level
Can you find the pairs that represent the same amount of money?
problem
Favourite
Peaches today, Peaches tomorrow...
Age
11 to 14
Challenge level
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
problem
Favourite
Terminating or not
Age
11 to 14
Challenge level
Is there a quick way to work out whether a fraction terminates or recurs when you write it as a decimal?
problem
Favourite
Ben's Game
Age
11 to 16
Challenge level
Ben, Jack and Emma passed counters to each other and ended with the same number of counters. How many did they start with?
problem
Favourite
A Chance to Win?
Age
11 to 14
Challenge level
Imagine you were given the chance to win some money... and imagine
you had nothing to lose...
problem
Favourite
Tiny Nines
Age
14 to 16
Challenge level
What do you notice about these families of recurring decimals?
problem
Favourite
Repetitiously
Age
14 to 16
Challenge level
Can you express every recurring decimal as a fraction?
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You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.