El Nombre helps Little Juan to solve a simple problem involving coin equivalents to 10p. Little Juan is worried that Pedro has more money than him but El Nombre explains how 5p+2p+2p+1p is the same as 10p.

Please note there is a small error in the image at approximately 2 minutes 27 seconds.

First broadcast:
25 October 2000

Students could be divided into four groups and each group could be given different kinds of coins. For example, group one would have 1p coins, group two would have 2p coins, group three would have 5p coins and group four would have 10p coins. The groups could then trade with one another for coins of equal value so that by the end of the exercise, each group has every kind of coin but still the same amount of money.