Powers and roots

There are 62 NRICH Mathematical resources connected to Powers and roots
St Ives
article

St Ives

As I was going to St Ives, I met a man with seven wives. Every wife had seven sacks, every sack had seven cats, every cat had seven kittens. Kittens, cats, sacks and wives, how many were going to St Ives?
Pocket money
problem

Pocket money

Age
11 to 14
Challenge level
filled star empty star empty star
Which of these pocket money systems would you rather have?