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Hello there.

Question: Phoebe works out that (9.75×25.14) - 10.115 = 189. Is Phoebe correct? Explain your answer using estimation

Answer: Round your values to numbers that are easier to work with.
9.75 = 10
25.14 = 25
10.115 = 10
Calculate it:
10 x 25 = 250
250 - 10 - 240.
Therefore phoebe is not correct as her number is way too far off.
The actual correct answer would have been : 235.

Hope This Helps You!
Good Luck Studying ^-^

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