### Days and Dates

Investigate how you can work out what day of the week your birthday will be on next year, and the year after...

### Plum Tree

Label this plum tree graph to make it totally magic!

### Magic W

Find all the ways of placing the numbers 1 to 9 on a W shape, with 3 numbers on each leg, so that each set of 3 numbers has the same total.

# 2-digit Square

##### Stage: 4 Challenge Level:
Suppose the tens digit is $a$ and the units digit is $b$, then the two digit number is $10a+b$.