Addition and subtraction

There are 338 NRICH Mathematical resources connected to Addition and subtraction
Homes
problem

Homes

Age
5 to 7
Challenge level
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Six new homes are being built! They can be detached, semi-detached or terraced houses. How many different combinations of these can you find?
Plants
problem

Plants

Age
5 to 14
Challenge level
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Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?
Exploring Wild & Wonderful Number Patterns
problem

Exploring Wild & Wonderful Number Patterns

Age
7 to 11
Challenge level
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EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
Consecutive Numbers
problem

Consecutive Numbers

Age
7 to 14
Challenge level
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An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Prompt Cards
problem

Prompt Cards

Age
7 to 11
Challenge level
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These two group activities use mathematical reasoning - one is numerical, one geometric.