Sure! Let’s solve each of the 10 percent calculation problems step by step. The general formula to find
“What is X% of Y?” is:
>
(X / 100) × Y
We’ll apply this formula to each problem.
---
1. What is 65% of 580?
→ (65 / 100) × 580 = 0.65 × 580
→ 0.65 × 580 =
377
✔ Answer: 377
---
2. What is 80% of 660?
→ (80 / 100) × 660 = 0.80 × 660
→ 0.80 × 660 =
528
✔ Answer: 528
---
3. What is 90% of 600?
→ (90 / 100) × 600 = 0.90 × 600
→ 0.90 × 600 =
540
✔ Answer: 540
---
4. What is 90% of 650?
→ (90 / 100) × 650 = 0.90 × 650
→ 0.90 × 650 =
585
✔ Answer: 585
---
5. What is 5% of 320?
→ (5 / 100) × 320 = 0.05 × 320
→ 0.05 × 320 =
16
✔ Answer: 16
---
6. What is 15% of 280?
→ (15 / 100) × 280 = 0.15 × 280
→ 0.15 × 280 =
42
✔ Answer: 42
---
7. What is 75% of 872?
→ (75 / 100) × 872 = 0.75 × 872
→ 0.75 × 872 =
654
✔ Answer: 654
---
8. What is 95% of 280?
→ (95 / 100) × 280 = 0.95 × 280
→ 0.95 × 280 =
266
✔ Answer: 266
---
9. What is 85% of 460?
→ (85 / 100) × 460 = 0.85 × 460
→ 0.85 × 460 =
391
✔ Answer: 391
---
10. What is 30% of 510?
→ (30 / 100) × 510 = 0.30 × 510
→ 0.30 × 510 =
153
✔ Answer: 153
---
##
✔ Final Answers:
1.
377
2.
528
3.
540
4.
585
5.
16
6.
42
7.
654
8.
266
9.
391
10.
153
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Let me know if you’d like to see how to do these with fractions or mental math shortcuts too!
Parent Tip: Review the logic above to help your child master the concept of percent of a whole number worksheet.
