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'Sorting Numbers' printed from https://nrich.maths.org/
Numbers can be sorted in many different ways. We are just going to be using the numbers from 0 to 50.
In this box there is a set of numbers:
They are the odd numbers between 20 and 40.
In this box there is a different set of numbers:
They are multiples of five.
Now you can make your own sets. Think of a good title for each of your sets.