Question

Is an estimate of 8 as the difference between 4.7 and -3.3 reasonable? Explain.

Answer 1

$\bf \underset{\textit{\large 3.3 + 4.7 = 8}}{\stackrel{\textit{3.3 units}}{\boxed{-3.3}\rule[0.35em]{10em}{0.25pt}}0\stackrel{\textit{4.7 units}}{\rule[0.35em]{17em}{0.25pt}\boxed{4.7}}}$