This Sudoku requires you to do some working backwards before working forwards.
Annie and Ben are playing a game with a calculator. What was Annie's secret number?
This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?
Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?
Where will the point stop after it has turned through 30 000 degrees? I took out my calculator and typed 30 000 ÷ 360. How did this help?
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.
Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?
Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?
This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?
