Question

5. By rounding each of the numbers in the calculations below to 1 significant figure, find an estimate of the answer to each calculation.
(a) 3.1 x 7.9 1.9
(b) 5.7 x 20.9² - 9.8^3

(c) (19 8 x 4 71² +78 7​

Answer 1

Answer:

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