Place value

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

Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?

Can you replace the letters with numbers? Is there only one solution in each case?

A Deca Tree has 10 trunks, and on each trunk are 10 branches, and on each branch are 10 twigs...

Which of these clues are needed to find the number? Which clues aren't helpful?

This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

Will you play the nice or the nasty version of this dice game?

Can you complete this calculation by filling in the missing numbers?

Can you work out some different ways to balance this equation?

What happens when you round these numbers to the nearest whole number?