Let's solve each problem from the
5th Grade Percentage Worksheet step by step.
---
1. What is 70% of a kg?
We know:
- 1 kg = 1000 grams
- 70% means 70 out of 100, or $ \frac{70}{100} = 0.7 $
So,
$$
70\% \text{ of } 1\text{ kg} = 0.7 \times 1000 = 700 \text{ grams}
$$
✔ Answer: 700 grams
---
2. What percent of 21 is 15?
We want to find what percent 15 is of 21.
Use the formula:
$$
\text{Percent} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100
$$
$$
= \left( \frac{15}{21} \right) \times 100 = \left( \frac{5}{7} \right) \times 100 \approx 71.43\%
$$
✔ Answer: Approximately
71.43%
---
3. What percent of 45 is 28?
Again, use the same formula:
$$
\left( \frac{28}{45} \right) \times 100 \approx 62.22\%
$$
✔ Answer: Approximately
62.22%
---
4. In the set of first 10 natural numbers – 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10:
Total numbers = 10
####
(i) What percent of the numbers are odd?
Odd numbers: 1, 3, 5, 7, 9 → 5 numbers
$$
\frac{5}{10} \times 100 = 50\%
$$
✔ Answer: 50%
####
(ii) What percent of numbers are multiples of 4?
Multiples of 4 in the list: 4, 8 → 2 numbers
$$
\frac{2}{10} \times 100 = 20\%
$$
✔ Answer: 20%
####
(iii) What percent of numbers are less than 8?
Numbers less than 8: 1, 2, 3, 4, 5, 6, 7 → 7 numbers
$$
\frac{7}{10} \times 100 = 70\%
$$
✔ Answer: 70%
####
(iv) What percent of numbers are factors of 7?
Factors of 7: Since 7 is prime, its only positive factors are 1 and 7.
In the list: 1 and 7 → 2 numbers
$$
\frac{2}{10} \times 100 = 20\%
$$
✔ Answer: 20%
---
5. Angela loves to travel and spends 25% of the year on vacation and works for the rest of the year. What fraction of the year does she travel?
She travels 25% of the year.
Convert percentage to fraction:
$$
25\% = \frac{25}{100} = \frac{1}{4}
$$
✔ Answer: $ \frac{1}{4} $ of the year
---
✔ Final Answers Summary:
1.
700 grams
2.
71.43%
3.
62.22%
4.
(i)
50%
(ii)
20%
(iii)
70%
(iv)
20%
5.
$ \frac{1}{4} $
Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of 5th grade percent worksheet.