### 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.

### Grouping Goodies

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

### What Number?

I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.

# Ring a Ring of Numbers

##### Stage: 1 Challenge Level:

Oli from Oakmeeds School began the first part of this question where we had to make odd differences between pairs of numbers.

You need odd, even, odd, even as odd + even make odd. Each pair has an odd and an even.

Rukmini from Hopscotch Nursery also said:

When the differences are all odd, the sums are all odd.

Rukmini then went on to say:

To make the differences even, you need the numbers 2, 4, 6, 8. Then the sums are also even.

Absolutely right - well done to both Oli and Rukmini. What about the order of the numbers 2, 4, 6 and 8 in the ring? Does it matter? I'll leave you all to ponder on that.