Let’s solve each problem one by one.
We’re working with powers of ten — that means numbers like 10¹, 10², 10³, etc.
Remember:
- Multiplying by 10ⁿ means adding n zeros (or moving the decimal point n places to the right).
- Dividing by 10ⁿ means removing n zeros (or moving the decimal point n places to the left).
---
1) 80,000 ÷ 10³
10³ = 1,000
80,000 ÷ 1,000 = 80
→ Remove 3 zeros from 80,000 → 80
2) 5 × 10⁴
10⁴ = 10,000
5 × 10,000 = 50,000
3) 800,000 ÷ 10⁴
10⁴ = 10,000
800,000 ÷ 10,000 = 80
→ Remove 4 zeros → 80
4) 5 × 10¹
10¹ = 10
5 × 10 = 50
5) 800,000 ÷ 10⁴
Same as #3 → 80
6) 95 × 10¹
95 × 10 = 950
7) 60,000 ÷ 10⁴
10⁴ = 10,000
60,000 ÷ 10,000 = 6
8) 3 × 10³
10³ = 1,000
3 × 1,000 = 3,000
9) 40,000 ÷ 10²
10² = 100
40,000 ÷ 100 = 400
10) 747 × 10¹
747 × 10 = 7,470
11) 15,800,000 ÷ 10³
10³ = 1,000
15,800,000 ÷ 1,000 = 15,800
→ Remove 3 zeros
12) 9 × 10¹
9 × 10 = 90
13) 70,000 ÷ 10³
10³ = 1,000
70,000 ÷ 1,000 = 70
14) 331 × 10¹
331 × 10 = 3,310
15) 9,800 ÷ 10²
10² = 100
9,800 ÷ 100 = 98
16) 95 × 10⁴
95 × 10,000 = 950,000
17) 100 ÷ 10¹
100 ÷ 10 = 10
18) 9 × 10¹
9 × 10 = 90
19) 690,000 ÷ 10²
10² = 100
690,000 ÷ 100 = 6,900
20) 9 × 10²
9 × 100 = 900
---
Final Answer:
1. 80
2. 50,000
3. 80
4. 50
5. 80
6. 950
7. 6
8. 3,000
9. 400
10. 7,470
11. 15,800
12. 90
13. 70
14. 3,310
15. 98
16. 950,000
17. 10
18. 90
19. 6,900
20. 900
Parent Tip: Review the logic above to help your child master the concept of multiply and divide by powers of 10 worksheet.