Let's solve each problem step by step. The goal is to find the
percentage of a number.
We use the formula:
$$
\text{Percentage of a number} = \frac{\text{Percentage}}{100} \times \text{Number}
$$
---
Problems 1–10 (Try without a calculator)
1.
20% of 60
$$
\frac{20}{100} \times 60 = 0.2 \times 60 = 12
$$
2.
60% of 20
$$
\frac{60}{100} \times 20 = 0.6 \times 20 = 12
$$
3.
40% of 30
$$
\frac{40}{100} \times 30 = 0.4 \times 30 = 12
$$
4.
90% of 70
$$
\frac{90}{100} \times 70 = 0.9 \times 70 = 63
$$
5.
30% of 10
$$
\frac{30}{100} \times 10 = 0.3 \times 10 = 3
$$
6.
80% of 25
$$
\frac{80}{100} \times 25 = 0.8 \times 25 = 20
$$
7.
25% of 80
$$
\frac{25}{100} \times 80 = 0.25 \times 80 = 20
$$
8.
40% of 65
$$
\frac{40}{100} \times 65 = 0.4 \times 65 = 26
$$
9.
70% of 15
$$
\frac{70}{100} \times 15 = 0.7 \times 15 = 10.5
$$
10.
20% of 180
$$
\frac{20}{100} \times 180 = 0.2 \times 180 = 36
$$
---
Problems 11–20
11.
45% of 240
$$
\frac{45}{100} \times 240 = 0.45 \times 240 = 108
$$
12.
85% of 310
$$
\frac{85}{100} \times 310 = 0.85 \times 310 = 263.5
$$
13.
65% of 155
$$
\frac{65}{100} \times 155 = 0.65 \times 155 = 100.75
$$
14.
25% of 65
$$
\frac{25}{100} \times 65 = 0.25 \times 65 = 16.25
$$
15.
55% of 18
$$
\frac{55}{100} \times 18 = 0.55 \times 18 = 9.9
$$
16.
39% of 84
$$
\frac{39}{100} \times 84 = 0.39 \times 84 = 32.76
$$
17.
18% of 62
$$
\frac{18}{100} \times 62 = 0.18 \times 62 = 11.16
$$
18.
14% of 36
$$
\frac{14}{100} \times 36 = 0.14 \times 36 = 5.04
$$
19.
62% of 156
$$
\frac{62}{100} \times 156 = 0.62 \times 156 = 96.72
$$
20.
94% of 92
$$
\frac{94}{100} \times 92 = 0.94 \times 92 = 86.48
$$
---
✔ Final Answers:
| # | Answer |
|---|--------|
| 1 | 12 |
| 2 | 12 |
| 3 | 12 |
| 4 | 63 |
| 5 | 3 |
| 6 | 20 |
| 7 | 20 |
| 8 | 26 |
| 9 | 10.5 |
|10 | 36 |
|11 | 108 |
|12 | 263.5 |
|13 | 100.75 |
|14 | 16.25 |
|15 | 9.9 |
|16 | 32.76 |
|17 | 11.16 |
|18 | 5.04 |
|19 | 96.72 |
|20 | 86.48 |
---
🔍 Tips for Solving Without a Calculator:
- Convert percentages to decimals: divide by 100.
- Use mental math shortcuts:
- 10% → divide by 10
- 5% → half of 10%
- 25% → divide by 4
- 50% → divide by 2
- For example: 40% of 30 = 4 × (10% of 30) = 4 × 3 = 12
Let me know if you'd like this as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of percentage word problems worksheet grade 6.
