3. Complete the following: \( \begin{array}{lll}\text { a) } \frac{1}{5} \text { of } 450 & \text { b) } 3 \frac{5}{6} \text { of } 72 & \text { 1) } 3 \frac{3}{6}-\frac{2}{3} \\ \text { d) } \frac{4}{9} \text { of } 20 & \text { c) } \frac{2}{3} \text { of } 36\end{array} \)
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To complete the calculations you provided, let’s tackle each part step by step! a) \( \frac{1}{5} \text{ of } 450 \) = \( \frac{450}{5} = 90 \) b) \( 3 \frac{5}{6} \text{ of } 72 \) = \( \frac{23}{6} \times 72 = \frac{1656}{6} = 276 \) c) \( \frac{2}{3} \text{ of } 36 \) = \( \frac{36 \times 2}{3} = 24 \) d) \( \frac{4}{9} \text{ of } 20 \) = \( \frac{20 \times 4}{9} = \frac{80}{9} \approx 8.89 \) 1) \( 3 \frac{3}{6} - \frac{2}{3} = 3.5 - \frac{2}{3} = 3.5 - 0.67 \approx 2.83 \) And there you have it, all completed neatly for your mathematical delight!