Factors and multiples

There are 252 NRICH Mathematical resources connected to Factors and multiples
Times Tables Shifts
problem
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Times tables shifts

Age
7 to 11
Challenge level
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In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?

Factors and Multiples Game
game
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Factors and multiples game

A game in which players take it in turns to choose a number. Can you block your opponent?

Have you got it?
problem
Favourite

Have you got it?

Age
11 to 14
Challenge level
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Can you explain the strategy for winning this game with any target?
Remainders
problem
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Remainders

Age
7 to 14
Challenge level
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I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?
Lots of Biscuits!
problem
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Lots of biscuits!

Age
5 to 7
Challenge level
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Help share out the biscuits the children have made.

The Remainders Game
game
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The remainders game

Play this game and see if you can figure out the computer's chosen number.

Magnifying glass
problem
Favourite

Number detective

Age
5 to 11
Challenge level
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Follow the clues to find the mystery number.

Which is quicker?
problem
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Which is quicker?

Age
7 to 11
Challenge level
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Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?
Table patterns go wild!
problem
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Table patterns go wild!

Age
7 to 11
Challenge level
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Nearly all of us have made table patterns on hundred squares, that is 10 by 10 grids. This problem looks at the patterns on differently sized square grids.
Latin Numbers
problem
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Latin numbers

Age
14 to 16
Challenge level
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Can you create a Latin Square from multiples of a six digit number?