大象传媒

How to work out the difference between 79 and 82 by counting on, demonstrated using candles on a cake. An ant has 79 candles. She needs 82 to put on the Queen's birthday cake. Her friend asks her how many more she needs. She works out that she needs 3 more by counting on from 79 to 82. She puts her 79 candles on the cake and her friend gives her 3 more, which she places on the cake to make 82.