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Worms

Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?

Which Scripts?

There are six numbers written in five different scripts. Can you sort out which is which?

Highest and Lowest

Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number.

The Magic Number and the Hepta-tree

Age 7 to 11 Challenge Level:

It might be useful to round the percentages up or down to estimate the value of the balls.
You could think of a percentage as a fraction or decimal.