To find the percentage of a number, you can follow these simple steps:
1.
Convert the percentage to a decimal: Move the decimal point two places to the left (e.g., $50\%$ becomes $0.50$, or just $0.5$).
2.
Multiply: Multiply that decimal by the number given in the problem.
Here is the step-by-step solution for each problem:
1. $50\%$ of $80$
* $50\% = 0.5$
* $0.5 \times 80 = 40$
2. $45\%$ of $60$
* $45\% = 0.45$
* $0.45 \times 60 = 27$
3. $70\%$ of $20$
* $70\% = 0.7$
* $0.7 \times 20 = 14$
4. $60\%$ of $50$
* $60\% = 0.6$
* $0.6 \times 50 = 30$
5. $10\%$ of $90$
* $10\% = 0.1$
* $0.1 \times 90 = 9$
6. $25\%$ of $60$
* $25\% = 0.25$
* $0.25 \times 60 = 15$
7. $80\%$ of $40$
* $80\% = 0.8$
* $0.8 \times 40 = 32$
8. $75\%$ of $80$
* $75\% = 0.75$
* $0.75 \times 80 = 60$
9. $55\%$ of $60$
* $55\% = 0.55$
* $0.55 \times 60 = 33$
10. $40\%$ of $90$
* $40\% = 0.4$
* $0.4 \times 90 = 36$
11. $64\%$ of $100$
* $64\% = 0.64$
* $0.64 \times 100 = 64$
12. $14\%$ of $100$
* $14\% = 0.14$
* $0.14 \times 100 = 14$
13. $35\%$ of $40$
* $35\% = 0.35$
* $0.35 \times 40 = 14$
14. $65\%$ of $80$
* $65\% = 0.65$
* $0.65 \times 80 = 52$
15. $30\%$ of $150$
* $30\% = 0.3$
* $0.3 \times 150 = 45$
16. $85\%$ of $60$
* $85\% = 0.85$
* $0.85 \times 60 = 51$
17. $95\%$ of $40$
* $95\% = 0.95$
* $0.95 \times 40 = 38$
18. $15\%$ of $120$
* $15\% = 0.15$
* $0.15 \times 120 = 18$
19. $90\%$ of $80$
* $90\% = 0.9$
* $0.9 \times 80 = 72$
20. $60\%$ of $30$
* $60\% = 0.6$
* $0.6 \times 30 = 18$
Final Answer:
1. 40
2. 27
3. 14
4. 30
5. 9
6. 15
7. 32
8. 60
9. 33
10. 36
11. 64
12. 14
13. 14
14. 52
15. 45
16. 51
17. 38
18. 18
19. 72
20. 18
Parent Tip: Review the logic above to help your child master the concept of percents worksheet grade 8.
