You know those children in your class that just get it? They're great but, by Jove, do you spend time thinking of ways to challenge them. Well we think you might like this. It's a Year 4 Hundredths as Decimals challenge - two questions designed to get those cogs turning, to use mathematical language and to work collaboratively to develop their problem-solving skills. Naturally, an answer sheet has been provided, but rather than for you, maybe you could give it to the children, to prompt them along the way.