To solve the problem of finding the percentage of each number, we need to calculate each percentage step by step. The formula to find a percentage of a number is:
\[
\text{Percentage of a Number} = \left( \frac{\text{Percentage}}{100} \right) \times \text{Number}
\]
Let's solve each problem one by one.
---
1. 50% of 80
\[
\text{50% of 80} = \left( \frac{50}{100} \right) \times 80 = 0.5 \times 80 = 40
\]
2. 45% of 60
\[
\text{45% of 60} = \left( \frac{45}{100} \right) \times 60 = 0.45 \times 60 = 27
\]
3. 70% of 20
\[
\text{70% of 20} = \left( \frac{70}{100} \right) \times 20 = 0.7 \times 20 = 14
\]
4. 60% of 50
\[
\text{60% of 50} = \left( \frac{60}{100} \right) \times 50 = 0.6 \times 50 = 30
\]
5. 10% of 90
\[
\text{10% of 90} = \left( \frac{10}{100} \right) \times 90 = 0.1 \times 90 = 9
\]
6. 25% of 60
\[
\text{25% of 60} = \left( \frac{25}{100} \right) \times 60 = 0.25 \times 60 = 15
\]
7. 80% of 40
\[
\text{80% of 40} = \left( \frac{80}{100} \right) \times 40 = 0.8 \times 40 = 32
\]
8. 75% of 80
\[
\text{75% of 80} = \left( \frac{75}{100} \right) \times 80 = 0.75 \times 80 = 60
\]
9. 55% of 60
\[
\text{55% of 60} = \left( \frac{55}{100} \right) \times 60 = 0.55 \times 60 = 33
\]
10. 40% of 90
\[
\text{40% of 90} = \left( \frac{40}{100} \right) \times 90 = 0.4 \times 90 = 36
\]
11. 64% of 100
\[
\text{64% of 100} = \left( \frac{64}{100} \right) \times 100 = 0.64 \times 100 = 64
\]
12. 14% of 100
\[
\text{14% of 100} = \left( \frac{14}{100} \right) \times 100 = 0.14 \times 100 = 14
\]
13. 35% of 40
\[
\text{35% of 40} = \left( \frac{35}{100} \right) \times 40 = 0.35 \times 40 = 14
\]
14. 65% of 80
\[
\text{65% of 80} = \left( \frac{65}{100} \right) \times 80 = 0.65 \times 80 = 52
\]
15. 30% of 150
\[
\text{30% of 150} = \left( \frac{30}{100} \right) \times 150 = 0.3 \times 150 = 45
\]
16. 85% of 60
\[
\text{85% of 60} = \left( \frac{85}{100} \right) \times 60 = 0.85 \times 60 = 51
\]
17. 95% of 40
\[
\text{95% of 40} = \left( \frac{95}{100} \right) \times 40 = 0.95 \times 40 = 38
\]
18. 15% of 120
\[
\text{15% of 120} = \left( \frac{15}{100} \right) \times 120 = 0.15 \times 120 = 18
\]
19. 90% of 80
\[
\text{90% of 80} = \left( \frac{90}{100} \right) \times 80 = 0.9 \times 80 = 72
\]
20. 60% of 30
\[
\text{60% of 30} = \left( \frac{60}{100} \right) \times 30 = 0.6 \times 30 = 18
\]
---
Final Answers:
\[
\boxed{
\begin{array}{ll}
1. 50\% \text{ of } 80 = 40 & 11. 64\% \text{ of } 100 = 64 \\
2. 45\% \text{ of } 60 = 27 & 12. 14\% \text{ of } 100 = 14 \\
3. 70\% \text{ of } 20 = 14 & 13. 35\% \text{ of } 40 = 14 \\
4. 60\% \text{ of } 50 = 30 & 14. 65\% \text{ of } 80 = 52 \\
5. 10\% \text{ of } 90 = 9 & 15. 30\% \text{ of } 150 = 45 \\
6. 25\% \text{ of } 60 = 15 & 16. 85\% \text{ of } 60 = 51 \\
7. 80\% \text{ of } 40 = 32 & 17. 95\% \text{ of } 40 = 38 \\
8. 75\% \text{ of } 80 = 60 & 18. 15\% \text{ of } 120 = 18 \\
9. 55\% \text{ of } 60 = 33 & 19. 90\% \text{ of } 80 = 72 \\
10. 40\% \text{ of } 90 = 36 & 20. 60\% \text{ of } 30 = 18 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of percent worksheet grade 6.
