Percentages, estimation
Key Stage: 2 ★★
Can you break the dreadful spell? You'll need to estimate and calculate these percentages of amounts?
This problem gives work on percentages in an interesting and challenging way. It also gives you an opportunity to discuss different ways of estimating and therefore shows learners how expressions which look very different can give very close answers.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
Key Stage: 2 ★★
Can you break the dreadful spell? You'll need to estimate and calculate these percentages of amounts?
This problem gives work on percentages in an interesting and challenging way. It also gives you an opportunity to discuss different ways of estimating and therefore shows learners how expressions which look very different can give very close answers.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
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Some difficult examples make this for use with upper KS2, but a good resource that could be reverse-engineered (as it were) to make up other examples.
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