Multiplication and division

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

Round and round and round

Age
11 to 14
Challenge level
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Where will the point stop after it has turned through 30 000 degrees? I took out my calculator and typed 30 000 ÷ 360. How did this help?
Integrated Product Sudoku
problem

Integrated Product Sudoku

Age
11 to 16
Challenge level
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This Sudoku puzzle can be solved with the help of small clue-numbers on the border lines between pairs of neighbouring squares of the grid.
Making Longer, Making Shorter
problem

Making Longer, Making Shorter

Age
5 to 7
Challenge level
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Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?
Growing Garlic
problem

Growing Garlic

Age
5 to 11
Challenge level
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Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?
What's in the Box?
problem

What's in the Box?

Age
7 to 11
Challenge level
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This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?
More Magic Potting sheds
problem

More Magic Potting sheds

Age
11 to 16
Challenge level
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The number of plants in Mr McGregor's magic potting shed increases overnight. He'd like to put the same number of plants in each of his gardens, planting one garden each day. How can he do it?
Magic potting sheds
problem

Magic potting sheds

Age
11 to 16
Challenge level
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Mr McGregor has a magic potting shed. Overnight, the number of plants in it doubles. He'd like to put the same number of plants in each of three gardens, planting one garden each day. Can he do it?
Product Sudoku
problem

Product Sudoku

Age
11 to 16
Challenge level
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The clues for this Sudoku are the product of the numbers in adjacent squares.
Little Man
problem

Little Man

Age
5 to 7
Challenge level
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The Man is much smaller than us. Can you use the picture of him next to a mug to estimate his height and how much tea he drinks?