Mastery: Reasoning and Problem-Solving
- Write the change from 20p when buying:
(i) 16p biscuit
(ii) 14p cracker
(iii) 9p drink
- True or false?
You always get change if you pay for something with a 20p coin.
You can buy two 8p sweets and still have change from 20p
You pay with 20p and you spend 9p. You get more than 9p change.
- Sam says that the difference between 13p and 6p is the same as the difference between 20p and 13p. Is he right?
In-depth Investigation: The Puzzling Sweet Shop
Use the clues to work out which sweets the children bought. The Puzzling Sweet Shop from nrich.maths.org.