Estimating and approximating

There are 54 NRICH Mathematical resources connected to Estimating and approximating
Fruity Pairs
problem

Fruity Pairs

Age
5 to 7
Challenge level
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Which two items of fruit could Kate and Sam choose? Can you order the prices from lowest to highest?
Let's Get Flexible!
article

Let's Get Flexible!

In this article for primary teachers, Ems outlines how we can encourage learners to be flexible in their approach to calculation, and why this is crucial.
A jar of teddies
problem

A jar of teddies

Age
7 to 14
Challenge level
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How many teddies are in the jar? How many teddies could you fit in your classroom?
Count the Crayons
problem

Count the Crayons

Age
5 to 7
Challenge level
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How could you estimate the number of pencils/pens in these pictures?
Can you do \it too?
problem

Can you do it too?

Age
5 to 7
Challenge level
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Try some throwing activities and see whether you can throw something as far as the Olympic hammer or discus throwers.

Olympic Measures
problem

Olympic Measures

Age
11 to 14
Challenge level
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These Olympic quantities have been jumbled up! Can you put them back together again?
The Fastest Cyclist
problem

The Fastest Cyclist

Age
14 to 16
Challenge level
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Andy is desperate to reach John o'Groats first. Can you devise a winning race plan?
Branching Processes and Extinction
problem

Branching Processes and Extinction

Age
16 to 18
Challenge level
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An advanced mathematical exploration supporting our series of articles on population dynamics for advanced students.
Biology measurement challenge
problem

Biology measurement challenge

Age
14 to 16
Challenge level
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Analyse these beautiful biological images and attempt to rank them in size order.