Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.
Can you use this information to work out Charlie's house number?
I throw three dice and get 5, 3 and 2. Add the scores on the three dice. What do you get? Now multiply the scores. What do you notice?
What is the lowest number which always leaves a remainder of 1 when divided by each of the numbers from 2 to 10?
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Explore patterns based on a rhombus. How can you enlarge the pattern - or explode it?
What is the remainder when 2^2002 is divided by 7? What happens with different powers of 2?
A garrison of 600 men has just enough bread ... but, with the news that the enemy was planning an attack... How many ounces of bread a day must each man in the garrison be allowed, to hold out 45. . . .
A mathematician goes into a supermarket and buys four items. Using a calculator she multiplies the cost instead of adding them. How can her answer be the same as the total at the till?
When the number x 1 x x x is multiplied by 417 this gives the answer 9 x x x 0 5 7. Find the missing digits, each of which is represented by an "x" .
Learn how to use advanced pasting techniques to create interactive spreadsheets.
Learn how to use increment buttons and scroll bars to create interactive Excel resources.
Learn how to make a simple table using Excel.
Investigate factors and multiples using this interactive Excel spreadsheet. Use the increment buttons for experimentation and feedback.
This investigation uses Excel to optimise a characteristic of interest.