It can be satisfying to pay for something exactly using loose change thereby getting rid of those heavy, clunky coins from a purse, wallet or pocket! This investigation looks at what prices can be paid for exactly using 2 pence, or 2 cent, and 5 pence, or 5 cent, coins. It then introduces some new coins, such as the useful, but not yet invented, 3 pence or cent and 7 pence or cent coin to see if this could help us get...