Answered

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Writing to Explain Use rounding to estimate the product 12×9. Then, use compensation to find the total cost for 12 books that were $9 each, would she get a good estimate? Explain

Sagot :

apologiabiology
so if we do not know what 12 times 9 is then we can round 9 to 10 and get
12 times 10
most people can multiply by ten so this should be easy so
12 times 10=120


12 times 9=108
she was off by 12 so a 10% deviation error

another way to do it is you multiply 12 by 10 and get 10 12's
then you subtract 1  12 and get 9  12's

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