Printable Grade 6 worksheet titled "Percentage of a Number" with 20 problems to find percentages of various numbers, encouraging mental math skills.

Here are the solutions to the problems on your worksheet. I have worked through each one carefully to ensure the answers are correct.

1. 15% of 80
* Step 1: Find 10% of 80. Move the decimal one place to the left: $8$.
* Step 2: Find 5% of 80. Since 5 is half of 10, take half of 8: $4$.
* Step 3: Add them together ($10\% + 5\% = 15\%$). $8 + 4 = 12$.
* Answer: 12

2. 25% of 40
* Step 1: Remember that 25% is the same as the fraction $\frac{1}{4}$.
* Step 2: Divide 40 by 4.
* Answer: 10

3. 30% of 90
* Step 1: Find 10% of 90, which is $9$.
* Step 2: Multiply by 3 (because $10\% \times 3 = 30\%$).
* Step 3: $9 \times 3 = 27$.
* Answer: 27

4. 40% of 75
* Step 1: Convert 40% to a decimal: $0.40$.
* Step 2: Multiply $75 \times 0.4$.
* Calculation: $75 \times 4 = 300$, so $75 \times 0.4 = 30.0$.
* Answer: 30

5. 20% of 150
* Step 1: Find 10% of 150, which is $15$.
* Step 2: Multiply by 2 (because $10\% \times 2 = 20\%$).
* Step 3: $15 \times 2 = 30$.
* Answer: 30

6. 35% of 10
* Step 1: Convert 35% to a decimal: $0.35$.
* Step 2: Multiply $10 \times 0.35$. When multiplying by 10, move the decimal point one spot to the right.
* Answer: 3.5

7. 60% of 60
* Step 1: Convert 60% to a decimal: $0.6$.
* Step 2: Multiply $60 \times 0.6$.
* Calculation: $6 \times 6 = 36$. Adjust decimals/zeros: $60 \times 0.6 = 36$.
* Answer: 36

8. 25% of 60
* Step 1: 25% is equal to $\frac{1}{4}$.
* Step 2: Divide 60 by 4.
* Calculation: Half of 60 is 30. Half of 30 is 15.
* Answer: 15

9. 10% of 33
* Step 1: To find 10%, simply move the decimal point one place to the left.
* Answer: 3.3

10. 90% of 200
* Step 1: Find 10% of 200, which is $20$.
* Step 2: Subtract that from the total ($200 - 20$) OR multiply $20 \times 9$.
* Calculation: $20 \times 9 = 180$.
* Answer: 180

11. 85% of 108
* Step 1: Convert to decimal: $0.85$.
* Step 2: Multiply $108 \times 0.85$.
* Calculation: $108 \times 85 = 9180$. Move decimal two places left.
* Answer: 91.8

12. 40% of 88
* Step 1: Find 10% of 88, which is $8.8$.
* Step 2: Multiply by 4.
* Calculation: $8.8 \times 4 = 35.2$.
* Answer: 35.2

13. 15% of 68
* Step 1: Find 10% of 68 ($6.8$).
* Step 2: Find 5% of 68 (half of 6.8, which is $3.4$).
* Step 3: Add them together: $6.8 + 3.4 = 10.2$.
* Answer: 10.2

14. 55% of 28
* Step 1: Convert to decimal: $0.55$.
* Step 2: Multiply $28 \times 0.55$.
* Calculation: $28 \times 55 = 1540$. Move decimal two places left.
* Answer: 15.4

15. 30% of 480
* Step 1: Find 10% of 480, which is $48$.
* Step 2: Multiply by 3.
* Calculation: $48 \times 3 = 144$.
* Answer: 144

16. 27% of 235
* Step 1: Convert to decimal: $0.27$.
* Step 2: Multiply $235 \times 0.27$.
* Calculation: $235 \times 27 = 6345$. Move decimal two places left.
* Answer: 63.45

17. 44% of 97
* Step 1: Convert to decimal: $0.44$.
* Step 2: Multiply $97 \times 0.44$.
* Calculation: $97 \times 44 = 4268$. Move decimal two places left.
* Answer: 42.68

18. 62% of 82
* Step 1: Convert to decimal: $0.62$.
* Step 2: Multiply $82 \times 0.62$.
* Calculation: $82 \times 62 = 5084$. Move decimal two places left.
* Answer: 50.84

19. 47% of 67
* Step 1: Convert to decimal: $0.47$.
* Step 2: Multiply $67 \times 0.47$.
* Calculation: $67 \times 47 = 3149$. Move decimal two places left.
* Answer: 31.49

20. 82% of 124
* Step 1: Convert to decimal: $0.82$.
* Step 2: Multiply $124 \times 0.82$.
* Calculation: $124 \times 82 = 10168$. Move decimal two places left.
* Answer: 101.68

Final Answer:
1. 12
2. 10
3. 27
4. 30
5. 30
6. 3.5
7. 36
8. 15
9. 3.3
10. 180
11. 91.8
12. 35.2
13. 10.2
14. 15.4
15. 144
16. 63.45
17. 42.68
18. 50.84
19. 31.49
20. 101.68