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There are 5 NRICH Mathematical resources connected to NC-PropofNumbersFPSandC-R4-Y5, you may find related items under NC.
Broad Topics > NC > NC-PropofNumbersFPSandC-R4-Y5Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?
Imagine a pyramid which is built in square layers of small cubes. If we number the cubes from the top, starting with 1, can you picture which cubes are directly below this first cube?
One block is needed to make an up-and-down staircase, with one step up and one step down. How many blocks would be needed to build an up-and-down staircase with 5 steps up and 5 steps down?
Can you make a cycle of pairs that add to make a square number using all the numbers in the box below, once and once only?
Mrs Morgan, the class's teacher, pinned numbers onto the backs of three children. Use the information to find out what the three numbers were.