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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Tea Cups

Place the 16 different combinations of cup/saucer in this 4 by 4 arrangement so that no row or column contains more than one cup or saucer of the same colour.

Counting on Letters

The letters of the word ABACUS have been arranged in the shape of a triangle. How many different ways can you find to read the word ABACUS from this triangular pattern?

Multiply the Addition Square

Age 11 to 14
Challenge Level

How do the four numbers compare in size?
Try comparing the number in the top left corner of a square with the other three numbers.
So what happens when these numbers are multiplied in the way described?
You may like to print off this addition square to try out your ideas.