Addition and subtraction

There are 338 NRICH Mathematical resources connected to Addition and subtraction
Numbers Numbers Everywhere!
article

Numbers Numbers Everywhere!

Bernard Bagnall recommends some primary school problems which use numbers from the environment around us, from clocks to house numbers.
Got \It Article
article

Got \It Article

This article gives you a few ideas for understanding the Got It! game and how you might find a winning strategy.
An Alphanumeric
article

An Alphanumeric

Freddie Manners, of Packwood Haugh School in Shropshire solved an alphanumeric without using the extra information supplied and this article explains his reasoning.
Magic squares for special occasions
article

Magic squares for special occasions

This article explains how to make your own magic square to mark a special occasion with the special date of your choice on the top line.
Placeholder: several colourful numbers
project

How Many?

This project challenges you to work out the number of cubes hidden under a cloth. What questions would you like to ask?
What Distance?
problem

What Distance?

Age
7 to 11
Challenge level
filled star filled star empty star
Can you use addition and subtraction to answer these questions about real-life distances?
Diagonal in a Spiral
problem

Diagonal in a Spiral

Age
7 to 11
Challenge level
filled star filled star empty star
Investigate the totals you get when adding numbers in threes on the diagonal of this pattern.
Making Pathways
problem

Making Pathways

Age
7 to 11
Challenge level
filled star empty star empty star
Can you find different ways of creating paths using these paving slabs?