Age 11 to 14 Challenge Level:
Use the interactivity to help you complete the tables.
Look at your results in the table.
What happens if you double something on the left hand side?
What if you treble it, or halve it?
How many marbles would Meg need if her pouch was 1cm from the centre?
Where would Meg have to hang her pouch if it contained only 1 marble?