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Number and algebra

  • The Number System and Place Value
  • Calculations and Numerical Methods
  • Fractions, Decimals, Percentages, Ratio and Proportion
  • Properties of Numbers
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Probability and statistics

  • Handling, Processing and Representing Data
  • Probability

Working mathematically

  • Thinking mathematically
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Advanced mathematics

  • Decision Mathematics and Combinatorics
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For younger learners

  • Early Years Foundation Stage

Digging Into Number


These tasks give you the chance to dig deeply into maths, particularly number and calculation. The way to a solution is not obvious, so you will need to be prepared to explore, to make use of your creativity, and to explain your ideas. The deeper understanding you gain will make it all worthwhile!

Robot Monsters

Age 5 to 7
Challenge Level Yellow star
Use these head, body and leg pieces to make Robot Monsters which are different heights.

100 Square Jigsaw

Age 5 to 7
Challenge Level Yellow star
Can you complete this jigsaw of the 100 square?

Number Round Up

Age 5 to 7
Challenge Level Yellow starYellow starYellow star
Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

Growing Garlic

Age 5 to 11
Challenge Level Yellow star
Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

Domino Sets

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

Coded Hundred Square

Age 7 to 11
Challenge Level Yellow star
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

Unravelling Sequences

Age 7 to 11
Challenge Level Yellow star
Can you describe what is happening as this program runs? Can you unpick the steps in the process?

The Deca Tree

Age 7 to 11
Challenge Level Yellow star
Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.

Always, Sometimes or Never? Number

Age 7 to 11
Challenge Level Yellow star
Are these statements always true, sometimes true or never true?

Sealed Solution

Age 7 to 11
Challenge Level Yellow starYellow star
Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?

Amy's Dominoes

Age 7 to 11
Challenge Level Yellow starYellow star
Amy has a box containing domino pieces but she does not think it is a complete set. Which of her domino pieces are missing?

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Digging Into Geometry

Dig deeply into geometrical ideas by having a go at the tasks in this Primary student feature.

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Find a friend and play our dice games.

LP Student Latest

Latest list for the L Primary Students

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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