\( \begin{array}{ll}\text { Complete this exercise. } & \\ \begin{array}{ll}\text { 1. } 20 \% \text { of } \mathrm{R} 380= & \\ \text { 2. } 4 \% \text { of } \mathrm{R} 60= & \\ \text { 3. } 18 \% \text { of } 2 \mathrm{~kg}= & \\ \text { (Hint: Change the } \mathrm{kg} \text { to } \mathrm{g} \text { ) } \\ \text { 4. } 33 \frac{1}{3} \% \text { of } \mathrm{R} 600= & \\ \text { 5. } 17 \% \text { of } \mathrm{R} 200= & \\ \text { 6. } 90 \% \text { of } 1000 \mathrm{~g}= & \\ \text { 7. } 10 \% \text { of } 3 \text { hours }= & \text { (Hint: change the hours to minutes) } \\ \text { 8. } 50 \% \text { of } 5 \text { years }= & \text { (Hint: change the years to months) } \\ \text { 9. } 25 \% \text { of } 2 \text { days }= & \text { (Hint: change the days to hours) } \\ \text { 10. } 6 \% \text { of } \mathrm{R} 110= & \end{array}\end{array} \)
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The Deep Dive
To tackle these percentage questions, remember that finding a percentage is about taking a portion of a whole. Just multiply the whole by the percentage (as a decimal) to find your answer! For instance, for 20% of R380, you can think: \( R380 \times 0.20 = R76 \). So simple and satisfying; it's like uncovering a delightful secret each time you solve one! Here’s a quick math trick: When calculating percentages like 50%, simply halve the number! For 50% of 5 years, just divide 5 by 2, which gives you 2.5 years (or 30 months if you prefer!). Avoid common mistakes by ensuring you convert time and weight units properly—like changing kilograms to grams or hours to minutes. You’ll be a percentage whiz before you know it!
