Estimating Values Using Significant Figures (Without a Calculator)

1. Without the use of calculator, estimate the value of \(\frac{9.94\times 10.03}{22.35}\) correct to \(1\) significant figure.
2. Using your result in (a), estimate the value of \(\frac{994\times 1.003}{2.235}\) correct to \(1\) significant figure.

Editorial clarification: in (a), round each operand to one significant figure to form an estimate; in (b), scale that estimate. These estimates are not guaranteed to equal the actual answers correctly rounded to one significant figure.