1. Multiplying and dividing fractions
[N2.3 Core Starter]
Try to find some more pairs of numbers like these where their sum is the same as their product. Don’t forget to check your answers!
Try these fraction puzzles
A quarter is a third of it. What is it?
A third is a quarter of it. What is it?
Make up and test some similar puzzles for yourselves.
Preamble
Some puzzles involving multiplying and dividing fractions. A number of children might have forgotten this piece of content and need bringing up to speed. Children who spot the pattern should then be encouraged to check their conjecture. Making and testing fraction puzzles will generate material for display and also bring any major misconceptions to the fore.
Possible content
Adding, multiplying, dividing fractions in an investigative context, pattern spotting.
Resources
None.
Solution/Notes
The sequence carries on (with several quite interesting number patterns evident).
A quarter is a third of it. What is it? – three quarters
A third is a quarter of it. What is it? – one and a third
Original Material © Cambridge University Press 2010
Original Material © Cambridge University Press 2010