Question: Compute and express each answer with the proper number of significant figures, rounding as necessary. a. 56.0 + 3.44 = ? b. 0.00665 + 1.004

Compute and express each answer with the proper number of significant figures, rounding as necessary.
a. 56.0 + 3.44 = ?
b. 0.00665 + 1.004 = ?
c. 45.99 − 32.8 = ?
d. 45.99 − 32.8 + 75.02 = ?

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