Question: All numbers are approximate. (a) Estimate the result mentally using one-significant-digit approximations of all the numbers, and (b) Compute the result using the appropriate rounding

All numbers are approximate. 

(a) Estimate the result mentally using one-significant-digit approximations of all the numbers, and 

(b) Compute the result using the appropriate rounding rules and compare with the estimate.

7.84 × 4.932 − 11.317

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