![Number Lines in Disguise](/sites/default/files/styles/medium/public/thumbnails/content-id-13452-icon.jpg?itok=w1sVtOJy)
problem
Number Lines in Disguise
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
![Funny Factorisation](/sites/default/files/styles/medium/public/thumbnails/content-00-11-six3-icon.gif?itok=zt8Xv1W-)
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?
![Where can we visit?](/sites/default/files/styles/medium/public/thumbnails/content-00-12-six3-icon.jpg?itok=fnQnUDU6)
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?
![Two and Two](/sites/default/files/styles/medium/public/thumbnails/content-01-06-six2-icon.png?itok=r2AsNoHS)
problem
Two and Two
How many solutions can you find to this sum? Each of the different letters stands for a different number.
![Number Daisy](/sites/default/files/styles/medium/public/thumbnails/content-01-07-six1-icon.jpg?itok=MsQGFTpw)
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?
![American Billions](/sites/default/files/styles/medium/public/thumbnails/content-01-09-six5-icon.png?itok=jytZpqxV)
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...
![Product Sudoku](/sites/default/files/styles/medium/public/thumbnails/content-id-4903-icon.png?itok=VQGPrcYI)
problem
Product Sudoku
The clues for this Sudoku are the product of the numbers in adjacent squares.
![Factors and Multiples Puzzle](/sites/default/files/styles/medium/public/thumbnails/content-id-5448-icon.png?itok=OmzhsOJB)
problem
Factors and Multiples Puzzle
Using your knowledge of the properties of numbers, can you fill all the squares on the board?
![Add to 200](/sites/default/files/styles/medium/public/thumbnails/content-id-11110-icon.png?itok=uXY6xAeD)
![Forwards Add Backwards](/sites/default/files/styles/medium/public/thumbnails/content-id-11111-icon.png?itok=qNzPZE6G)
![Overlaps](/sites/default/files/styles/medium/public/thumbnails/content-id-11112-icon.png?itok=qda5H61D)
![Can you Make 100?](/sites/default/files/styles/medium/public/thumbnails/content-id-11819-icon.jpg?itok=TRBLygmu)
problem
Can you Make 100?
How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?