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To give an approximate value rather than an exact answer!

Example:

What is the most reasonable estimate for 29 x 9 x 18?

you would do 30 x 10 x 20 so

which is right

A. 600

B. 3,600

C. 3,000

D. 6,000

Answer: D

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βˆ™ 8y ago
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βˆ™ 8y ago

You replace the numbers in the question with approximate values and carry out the calculation using them instead of the exact numbers.

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