Given the products of adjacent cells, can you complete this Sudoku?
Here is a Sudoku with a difference! Use information about lowest common multiples to help you solve it.
The clues for this Sudoku are the product of the numbers in adjacent squares.
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...
Each clue in this Sudoku is the product of the two numbers in adjacent cells.
A student in a maths class was trying to get some information from her teacher. She was given some clues and then the teacher ended by saying, "Well, how old are they?"
The puzzle can be solved by finding the values of the unknown digits (all indicated by asterisks) in the squares of the $9\times9$ grid.
Ben, Jack and Emma passed counters to each other and ended with the same number of counters. How many did they start with?
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
This Sudoku requires you to do some working backwards before working forwards.
How many solutions can you find to this sum? Each of the different letters stands for a different number.
The letters in the following addition sum represent the digits 1 ... 9. If A=3 and D=2, what number is represented by "CAYLEY"?
Find the smallest whole number which, when mutiplied by 7, gives a product consisting entirely of ones.
This Sudoku, based on differences. Using the one clue number can you find the solution?
Find the values of the nine letters in the sum: FOOT + BALL = GAME
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
Replace the letters with numbers to make the addition work out correctly. R E A D + T H I S = P A G E
The items in the shopping basket add and multiply to give the same amount. What could their prices be?
If you take a three by three square on a 1-10 addition square and multiply the diagonally opposite numbers together, what is the difference between these products. Why?
Given the products of diagonally opposite cells - can you complete this Sudoku?
By selecting digits for an addition grid, what targets can you make?
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
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.
Use the differences to find the solution to this Sudoku.
How many different differences can you make?
A cinema has 100 seats. Show how it is possible to sell exactly 100 tickets and take exactly Â£100 if the prices are Â£10 for adults, 50p for pensioners and 10p for children.
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
A Latin square of order n is an array of n symbols in which each symbol occurs exactly once in each row and exactly once in each column.
Find out about Magic Squares in this article written for students. Why are they magic?!
My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
Can you find a cuboid that has a surface area of exactly 100 square units. Is there more than one? Can you find them all?
Different combinations of the weights available allow you to make different totals. Which totals can you make?
I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?
Investigate the different ways that fifteen schools could have given money in a charity fundraiser.
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?
In this game you are challenged to gain more columns of lily pads than your opponent.
You are given the Lowest Common Multiples of sets of digits. Find the digits and then solve the Sudoku.
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?
Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?
Make your own double-sided magic square. But can you complete both sides once you've made the pieces?
15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?
Use the clues about the shaded areas to help solve this sudoku
Rather than using the numbers 1-9, this sudoku uses the nine different letters used to make the words "Advent Calendar".
Can you use your powers of logic and deduction to work out the missing information in these sporty situations?
Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?
You need to find the values of the stars before you can apply normal Sudoku rules.
A pair of Sudoku puzzles that together lead to a complete solution.
Mr Smith and Mr Jones are two maths teachers. By asking questions, the answers to which may be right or wrong, Mr Jones is able to find the number of the house Mr Smith lives in... Or not!
Two sudokus in one. Challenge yourself to make the necessary connections.
Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?