Question: Perform the following calculations, in each case, first estimate the solution without using a calculator, following the procedure outline in Section 2.5b, and then do

Perform the following calculations, in each case, first estimate the solution without using a calculator, following the procedure outline in Section 2.5b, and then do the calculation, paying attention to significant figures.

(a) (2.7) (8.632)

(b) (3.600 x 10^-4) / 45

(d) (4.753 x 10⁴) – (9 x 10²)

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