Multiplication and division

There are 227 NRICH Mathematical resources connected to Multiplication and division
Skeleton
problem

Skeleton

Age
11 to 14
Challenge level
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Amazing as it may seem the three fives remaining in the following `skeleton' are sufficient to reconstruct the entire long division sum.

Mathdoku demonstration
page

Mathdoku demonstration

This video of Charlie and Liz solving a 6 by 6 Mathdoku may give you ideas for strategies to try.
6 by 6 Mathdokus
problem

6 by 6 Mathdokus

Age
7 to 16
Challenge level
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Can you use the clues to complete these 6 by 6 Mathematical Sudokus?
5 by 5 Mathdokus
problem

5 by 5 Mathdokus

Age
7 to 16
Challenge level
filled star empty star empty star
Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
4 by 4 Mathdokus
problem

4 by 4 Mathdokus

Age
7 to 14
Challenge level
filled star empty star empty star
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
3 by 3 Mathdokus
problem

3 by 3 Mathdokus

Age
7 to 14
Challenge level
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Can you use the clues to complete these 3 by 3 Mathematical Sudokus?
Mathdoku
problem

Mathdoku

Age
7 to 11
Challenge level
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Complete the Mathdoku grid using the clues. Can you convince us that the number you have chosen for each square has to be correct?
An Easy Way to Multiply by 10?
problem

An Easy Way to Multiply by 10?

Age
7 to 11
Challenge level
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Do you agree with Badger's statements? Is Badger's reasoning 'watertight'? Why or why not?
Napier's Bones
problem

Napier's Bones

Age
7 to 11
Challenge level
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The Scot, John Napier, invented these strips about 400 years ago to help calculate multiplication and division. Can you work out how to use Napier's bones to find the answer to these multiplications?
Getting the balance right
article

Getting the balance right

In this article for primary teachers, Ems shares some common misconceptions surrounding the equals sign, and suggests ways to help learners develop their understanding.