Jon has 200 square paving stones. He uses some to make a square patio. Show that the largest number of paving stones he can use is 196
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Mr Lister wants to cover the backyard in either paving stones or gravel. He has two options.
He can cover the backyard in 0.5 metre by 0.5 metre paving stones. Each stone costs £5.50.
He can cover the backyard in gravel. Gravel costs £21 per metre squared.
Which is the cheaper option and by how much?
1. What do I have to do?
Read the question through twice.
Highlight or underline the important pieces of information in the question.
2. What information do I need?
The highlighted words are the most important ones.
The cost for each option needs to be calculated. The question asks which is the cheaper option and by how much, so there is going to be a subtraction.
3. What information don’t I need?
It doesn’t matter who the backyard belongs to.
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