Worksheet for practicing percentage calculations.

Absolutely! Let’s solve this step by step. The worksheet asks you to find different percentages of given numbers: 10%, 20%, 30%, 5%, and 15% of the numbers 30, 90, 60, 20, 100, and 70.

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🔢 Key Concept:

To find a percentage of a number, you can use this formula:

> Percentage of a number = (Percentage ÷ 100) × Number

Or, more simply:
- 10% = divide by 10
- 20% = divide by 5 (or double 10%)
- 30% = triple 10% (or 3 × 10%)
- 5% = half of 10%
- 15% = 10% + 5%

Let’s compute each section.

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## ✔ SECTION 1: Find 10% of the following amounts

Remember: 10% = ÷ 10

1. 10% of 30 = 30 ÷ 10 = 3
2. 10% of 90 = 90 ÷ 10 = 9
3. 10% of 60 = 60 ÷ 10 = 6
4. 10% of 20 = 20 ÷ 10 = 2
5. 10% of 100 = 100 ÷ 10 = 10
6. 10% of 70 = 70 ÷ 10 = 7

✔ Answers: 3, 9, 6, 2, 10, 7

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## ✔ SECTION 2: Now find 20%

20% = 2 × 10% (or ÷ 5)

1. 20% of 30 = 2 × 3 = 6
2. 20% of 90 = 2 × 9 = 18
3. 20% of 60 = 2 × 6 = 12
4. 20% of 20 = 2 × 2 = 4
5. 20% of 100 = 2 × 10 = 20
6. 20% of 70 = 2 × 7 = 14

✔ Answers: 6, 18, 12, 4, 20, 14

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## ✔ SECTION 3: Now find 30%

30% = 3 × 10%

1. 30% of 30 = 3 × 3 = 9
2. 30% of 90 = 3 × 9 = 27
3. 30% of 60 = 3 × 6 = 18
4. 30% of 20 = 3 × 2 = 6
5. 30% of 100 = 3 × 10 = 30
6. 30% of 70 = 3 × 7 = 21

✔ Answers: 9, 27, 18, 6, 30, 21

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## ✔ SECTION 4: Now find 5%

5% = half of 10%

1. 5% of 30 = 3 ÷ 2 = 1.5
2. 5% of 90 = 9 ÷ 2 = 4.5
3. 5% of 60 = 6 ÷ 2 = 3
4. 5% of 20 = 2 ÷ 2 = 1
5. 5% of 100 = 10 ÷ 2 = 5
6. 5% of 70 = 7 ÷ 2 = 3.5

✔ Answers: 1.5, 4.5, 3, 1, 5, 3.5

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## ✔ SECTION 5: Finally find 15%

15% = 10% + 5%

1. 15% of 30 = 3 + 1.5 = 4.5
2. 15% of 90 = 9 + 4.5 = 13.5
3. 15% of 60 = 6 + 3 = 9
4. 15% of 20 = 2 + 1 = 3
5. 15% of 100 = 10 + 5 = 15
6. 15% of 70 = 7 + 3.5 = 10.5

✔ Answers: 4.5, 13.5, 9, 3, 15, 10.5

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## 🧾 Final Answer Sheet:

Find 10%:

1. 3
2. 9
3. 6
4. 2
5. 10
6. 7

Find 20%:

1. 6
2. 18
3. 12
4. 4
5. 20
6. 14

Find 30%:

1. 9
2. 27
3. 18
4. 6
5. 30
6. 21

Find 5%:

1. 1.5
2. 4.5
3. 3
4. 1
5. 5
6. 3.5

Find 15%:

1. 4.5
2. 13.5
3. 9
4. 3
5. 15
6. 10.5

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💡 Tip: You can always check your answers using the formula:
(Percentage / 100) × Number

For example: 15% of 30 = (15/100) × 30 = 0.15 × 30 = 4.5 ✔️

Let me know if you want to practice more or need visual aids! 😊