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MAP Recommended Practice

Course: MAP Recommended Practice>Unit 23

Lesson 3: Estimating lengths

Estimating lengths

Sal estimates the length of an object when given the length of another object.

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• Why do we estimate instead of doing the problem?
• Good question. There are loads of reasons! Here are some -
1. Estimating can be much quicker than solving the actual problem.
2. We don't always mind about having exactly the right number, we just need to know it roughly.
3. Sometimes we don't have everything we need to solve the problem 'properly' (e.g. we might not have a ruler to hand)
• What does Estimate mean?
• When you estimate, you roughly find out a value. It's not an exact answer, but instead a number close to the actual value or a range that has the value in it. You can estimate when you're not sure of the actual answer, like Sal did in the video.