Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?
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?
Which numbers can we write as a sum of square numbers?
Factor track is not a race but a game of skill. The idea is to go round the track in as few moves as possible, keeping to the rules.
Follow this recipe for sieving numbers and see what interesting patterns emerge.
Nine squares are fitted together to form a rectangle. Can you find its dimensions?
How many different number families can you find?
