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problem
Number lines in disguise
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
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problem
Funny factorisation
Using the digits 1 to 9, the number 4396 can be written as the product of two numbers. Can you find the factors?
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problem
Where can we visit?
Charlie and Abi put a counter on 42. They wondered if they could visit all the other numbers on their 1-100 board, moving the counter using just these two operations: x2 and -5. What do you think?
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problem
Two and two
How many solutions can you find to this sum? Each of the different letters stands for a different number.
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problem
Number daisy
Can you find six numbers to go in the Daisy from which you can make all the numbers from 1 to a number bigger than 25?
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problem
American billions
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
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problem
Product Sudoku
The clues for this Sudoku are the product of the numbers in adjacent squares.
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problem
Factors and multiples puzzle
Using your knowledge of the properties of numbers, can you fill all the squares on the board?
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game
Favourite
Factors and multiples game
A game in which players take it in turns to choose a number. Can you block your opponent?
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problem
Can you make 100?
How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?