### Plants

Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?

### Number Round Up

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.

### Weighted Numbers

Use the number weights to find different ways of balancing the equaliser.

# Pairs of Numbers

##### Stage: 1 Challenge Level:

James from Evenlode sent a very well-explained solution this problem.  He said:

To make pairs to $10$ you need to leave out $5$ and $10$, because you would need a double for the $5$ and a $0$ for the $10$.
To make pairs to $12$ you need to leave out $1$ and $6$, because you need $11$ for the $1$ and double for the $6$.
To make pairs to $13$ you need to leave out $1$ and $2$, because you need numbers higher than $10$ ($11$ and $12$) .
To make pairs to $11$ ... you don't need to leave ANYTHING out, because $11$ is an odd number so you don't need any doubles AND you don't need partners bigger than $10$.

Thank you also to Johannes, Fred and Lok from St Barnabas,  Henry from Moulsford, children from Jebel Ali Primary School, Alex from Templars Primary, Alex from Maidstone and Beth from Torpoint who all sent clear solutions.