Let’s solve each problem step by step. Remember: “X% of Y” means you multiply Y by X/100.
We’ll go one by one:
---
1. 15% of 80
→ 15 ÷ 100 = 0.15
→ 0.15 × 80 =
12
2. 25% of 40
→ 25 ÷ 100 = 0.25
→ 0.25 × 40 =
10
3. 30% of 90
→ 30 ÷ 100 = 0.30
→ 0.30 × 90 =
27
4. 40% of 75
→ 40 ÷ 100 = 0.40
→ 0.40 × 75 =
30
5. 20% of 150
→ 20 ÷ 100 = 0.20
→ 0.20 × 150 =
30
6. 35% of 10
→ 35 ÷ 100 = 0.35
→ 0.35 × 10 =
3.5
7. 60% of 60
→ 60 ÷ 100 = 0.60
→ 0.60 × 60 =
36
8. 25% of 60
→ 25 ÷ 100 = 0.25
→ 0.25 × 60 =
15
9. 10% of 33
→ 10 ÷ 100 = 0.10
→ 0.10 × 33 =
3.3
10. 90% of 200
→ 90 ÷ 100 = 0.90
→ 0.90 × 200 =
180
---
Now the second column (you can use a calculator if needed, but we’ll do it manually too):
11. 85% of 108
→ 85 ÷ 100 = 0.85
→ 0.85 × 108
Break it down:
0.85 × 100 = 85
0.85 × 8 = 6.8
Total = 85 + 6.8 =
91.8
12. 40% of 88
→ 0.40 × 88 =
0.4 × 80 = 32
0.4 × 8 = 3.2
Total = 32 + 3.2 =
35.2
13. 15% of 68
→ 0.15 × 68
0.10 × 68 = 6.8
0.05 × 68 = 3.4
Total = 6.8 + 3.4 =
10.2
14. 55% of 28
→ 0.55 × 28
0.50 × 28 = 14
0.05 × 28 = 1.4
Total = 14 + 1.4 =
15.4
15. 30% of 480
→ 0.30 × 480 =
0.3 × 400 = 120
0.3 × 80 = 24
Total = 120 + 24 =
144
16. 27% of 235
→ 0.27 × 235
Break it:
0.20 × 235 = 47
0.07 × 235 = let’s compute:
0.07 × 200 = 14
0.07 × 35 = 2.45
So 14 + 2.45 = 16.45
Total = 47 + 16.45 =
63.45
17. 44% of 97
→ 0.44 × 97
Think: 0.44 × 100 = 44 → minus 0.44 × 3 = 1.32
So 44 - 1.32 =
42.68
18. 62% of 82
→ 0.62 × 82
0.60 × 82 = 49.2
0.02 × 82 = 1.64
Total = 49.2 + 1.64 =
50.84
19. 47% of 67
→ 0.47 × 67
0.40 × 67 = 26.8
0.07 × 67 = 4.69
Total = 26.8 + 4.69 =
31.49
20. 82% of 124
→ 0.82 × 124
0.80 × 124 = 99.2
0.02 × 124 = 2.48
Total = 99.2 + 2.48 =
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
Parent Tip: Review the logic above to help your child master the concept of grade 6 worksheet.
