1. 2.1 × 10³ - 1.3 × 10² = 1.97 × 10³
2. 5.2 × 10⁴ + 3.7 × 10³ = 5.57 × 10⁴
3. 8.7 × 10⁵ - 6.9 × 10⁴ = 8.01 × 10⁵
4. 9.64 × 10⁶ + 8.3 × 10⁵ = 1.047 × 10⁷
5. 1.3 × 10⁷ - 5.4 × 10⁶ = 7.6 × 10⁶
6. 9.11 × 10⁸ + 7.2 × 10⁷ = 9.83 × 10⁸
7. 6.2 × 10⁹ - 4.8 × 10⁸ = 5.72 × 10⁹
8. 8.5 × 10¹⁰ + 6.9 × 10⁹ = 9.19 × 10¹⁰
9. 3.1 × 10¹¹ - 1.7 × 10¹⁰ = 2.93 × 10¹¹
10. 2.7 × 10¹² + 9.8 × 10¹¹ = 3.68 × 10¹²
11. 1.8 × 10¹³ - 7.2 × 10¹² = 1.08 × 10¹³
12. 4.5 × 10¹⁴ + 2.3 × 10¹³ = 4.73 × 10¹⁴
13. 6.8 × 10¹⁵ - 5.1 × 10¹⁴ = 6.29 × 10¹⁵
14. 9.2 × 10¹⁶ + 3.4 × 10¹⁵ = 9.54 × 10¹⁶
15. 7.3 × 10¹⁷ - 2.8 × 10¹⁶ = 7.02 × 10¹⁷
16. 5.6 × 10¹⁸ + 4.1 × 10¹⁷ = 6.01 × 10¹⁸
17. 3.9 × 10¹⁹ - 1.5 × 10¹⁸ = 3.75 × 10¹⁹
18. 8.4 × 10²⁰ + 6.2 × 10¹⁹ = 9.02 × 10²⁰
19. 2.1 × 10²¹ - 9.7 × 10²⁰ = 1.13 × 10²¹
20. 6.7 × 10²² + 3.8 × 10²¹ = 7.08 × 10²²
21. 4.3 × 10²³ - 2.9 × 10²² = 4.01 × 10²³
22. 7.8 × 10²⁴ + 5.6 × 10²³ = 8.36 × 10²⁴
23. 1.2 × 10²⁵ - 8.4 × 10²⁴ = 3.6 × 10²⁴
24. 9.5 × 10²⁶ + 7.1 × 10²⁵ = 1.021 × 10²⁷
25. 3.6 × 10²⁷ - 2.2 × 10²⁶ = 3.38 × 10²⁷
26. 8.9 × 10²⁸ + 6.5 × 10²⁷ = 9.55 × 10²⁸
27. 5.4 × 10²⁹ - 3.1 × 10²⁸ = 5.09 × 10²⁹
28. 7.2 × 10³⁰ + 4.8 × 10²⁹ = 7.68 × 10³⁰
29. 2.8 × 10³¹ - 1.6 × 10³⁰ = 2.64 × 10³¹
30. 6.1 × 10³² + 3.9 × 10³¹ = 6.49 × 10³²
Parent Tip: Review the logic above to help your child master the concept of scientific notation worksheet pdf.
