Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.
Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?
This problem challenges you to find out how many odd numbers there
are between pairs of numbers. Can you find a pair of numbers that
has four odds between them?
Well done for giving clear solutions to this
problem. Many of you were able to explain a general strategy.
Tom and Jeevan from Devonshire Primary School said:
Peter, Henry, Charlie, Lulu and Samuel at
Weald C of E Primary School assumed that you could also get a zero.
They went on to think about how you would make the smallest
Homeroom 7 at Kororoit Creek Primary School,
Australia looked at a strategy for making the largest odd number
Well done too to Robert from West Hoathly and
Sophie from Greenacre who also sent very full responses.