Let's solve each multiplication problem step by step. We are asked to
find the product of two numbers in each case.
---
1. 45,503 × 30
Break it down:
- Multiply 45,503 × 3 = 136,509
- Then multiply by 10 (since 30 = 3 × 10):
→ 136,509 × 10 =
1,365,090
✔ Answer: 1,365,090
---
2. 82,978 × 30
- 82,978 × 3 = 248,934
- ×10 → 2,489,340
✔ Answer: 2,489,340
---
3. 64,538 × 80
- 64,538 × 8 = 516,304
- ×10 → 5,163,040
✔ Answer: 5,163,040
---
4. 47,791 × 50
- 47,791 × 5 = 238,955
- ×10 → 2,389,550
✔ Answer: 2,389,550
---
5. 17,498 × 80
- 17,498 × 8 = 139,984
- ×10 → 1,399,840
✔ Answer: 1,399,840
---
6. 7,024 × 50
- 7,024 × 5 = 35,120
- ×10 → 351,200
✔ Answer: 351,200
---
7. 16,345 × 30
- 16,345 × 3 = 49,035
- ×10 → 490,350
✔ Answer: 490,350
---
8. 60,729 × 60
- 60,729 × 6 = 364,374
- ×10 → 3,643,740
✔ Answer: 3,643,740
---
9. 75,334 × 10
- Multiplying by 10 → just add a zero
✔ Answer: 753,340
---
10. 19,035 × 10
- Add a zero → 190,350
✔ Answer: 190,350
---
11. 64,762 × 10
- Add a zero → 647,620
✔ Answer: 647,620
---
12. 30,145 × 80
- 30,145 × 8 = 241,160
- ×10 → 2,411,600
✔ Answer: 2,411,600
---
13. 50,720 × 60
- 50,720 × 6 = 304,320
- ×10 → 3,043,200
✔ Answer: 3,043,200
---
14. 92,727 × 70
- 92,727 × 7 = 649,089
- ×10 → 6,490,890
✔ Answer: 6,490,890
---
15. 71,215 × 50
- 71,215 × 5 = 356,075
- ×10 → 3,560,750
✔ Answer: 3,560,750
---
16. 4,441 × 50
- 4,441 × 5 = 22,205
- ×10 → 222,050
✔ Answer: 222,050
---
17. 67,667 × 30
- 67,667 × 3 = 203,001
- ×10 → 2,030,010
✔ Answer: 2,030,010
---
18. 3,911 × 10
- Add a zero → 39,110
✔ Answer: 39,110
---
✔ Final Answers:
| Problem | Answer |
|--------|---------------|
| 1 | 1,365,090 |
| 2 | 2,489,340 |
| 3 | 5,163,040 |
| 4 | 2,389,550 |
| 5 | 1,399,840 |
| 6 | 351,200 |
| 7 | 490,350 |
| 8 | 3,643,740 |
| 9 | 753,340 |
| 10 | 190,350 |
| 11 | 647,620 |
| 12 | 2,411,600 |
| 13 | 3,043,200 |
| 14 | 6,490,890 |
| 15 | 3,560,750 |
| 16 | 222,050 |
| 17 | 2,030,010 |
| 18 | 39,110 |
---
🔍 Explanation Summary:
- When multiplying by multiples of 10 (like 30, 50, 80), you can:
- First multiply by the non-zero digit (e.g., 3, 5, 8)
- Then add one zero (for ×10), or two zeros if needed.
- For example:
$ 45,503 × 30 = 45,503 × 3 × 10 $
- This simplifies mental math and reduces errors.
Let me know if you'd like this as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of math worksheet for grade 5 multiplication.
