To solve the problem of finding the percentage of each number, we use the formula:
\[
\text{Percentage of a Number} = \left( \frac{\text{Percentage}}{100} \right) \times \text{Number}
\]
Let's solve each problem step by step.
---
1. 10% of 70
\[
\text{10% of 70} = \left( \frac{10}{100} \right) \times 70 = 0.1 \times 70 = 7
\]
2. 65% of 20
\[
\text{65% of 20} = \left( \frac{65}{100} \right) \times 20 = 0.65 \times 20 = 13
\]
3. 15% of 400
\[
\text{15% of 400} = \left( \frac{15}{100} \right) \times 400 = 0.15 \times 400 = 60
\]
4. 63% of 100
\[
\text{63% of 100} = \left( \frac{63}{100} \right) \times 100 = 0.63 \times 100 = 63
\]
5. 10% of 50
\[
\text{10% of 50} = \left( \frac{10}{100} \right) \times 50 = 0.1 \times 50 = 5
\]
6. 22% of 50
\[
\text{22% of 50} = \left( \frac{22}{100} \right) \times 50 = 0.22 \times 50 = 11
\]
7. 75% of 60
\[
\text{75% of 60} = \left( \frac{75}{100} \right) \times 60 = 0.75 \times 60 = 45
\]
8. 30% of 90
\[
\text{30% of 90} = \left( \frac{30}{100} \right) \times 90 = 0.3 \times 90 = 27
\]
9. 55% of 160
\[
\text{55% of 160} = \left( \frac{55}{100} \right) \times 160 = 0.55 \times 160 = 88
\]
10. 45% of 50
\[
\text{45% of 50} = \left( \frac{45}{100} \right) \times 50 = 0.45 \times 50 = 22.5
\]
11. 10% of 40
\[
\text{10% of 40} = \left( \frac{10}{100} \right) \times 40 = 0.1 \times 40 = 4
\]
12. 12% of 300
\[
\text{12% of 300} = \left( \frac{12}{100} \right) \times 300 = 0.12 \times 300 = 36
\]
13. 95% of 80
\[
\text{95% of 80} = \left( \frac{95}{100} \right) \times 80 = 0.95 \times 80 = 76
\]
14. 50% of 20
\[
\text{50% of 20} = \left( \frac{50}{100} \right) \times 20 = 0.5 \times 20 = 10
\]
15. 90% of 60
\[
\text{90% of 60} = \left( \frac{90}{100} \right) \times 60 = 0.9 \times 60 = 54
\]
16. 20% of 75
\[
\text{20% of 75} = \left( \frac{20}{100} \right) \times 75 = 0.2 \times 75 = 15
\]
17. 40% of 100
\[
\text{40% of 100} = \left( \frac{40}{100} \right) \times 100 = 0.4 \times 100 = 40
\]
18. 70% of 60
\[
\text{70% of 60} = \left( \frac{70}{100} \right) \times 60 = 0.7 \times 60 = 42
\]
19. 55% of 40
\[
\text{55% of 40} = \left( \frac{55}{100} \right) \times 40 = 0.55 \times 40 = 22
\]
20. 16% of 150
\[
\text{16% of 150} = \left( \frac{16}{100} \right) \times 150 = 0.16 \times 150 = 24
\]
---
Final Answers:
\[
\boxed{
\begin{array}{ll}
1. 7 & 11. 4 \\
2. 13 & 12. 36 \\
3. 60 & 13. 76 \\
4. 63 & 14. 10 \\
5. 5 & 15. 54 \\
6. 11 & 16. 15 \\
7. 45 & 17. 40 \\
8. 27 & 18. 42 \\
9. 88 & 19. 22 \\
10. 22.5 & 20. 24 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of percentages worksheet grade 4.
