Grade 8 Subtracting Numbers in Scientific Notation

Subtract. Give both numbers the same power of 10 first, then write the answer in scientific notation.

1. 1.(3.3 x 10^3) - (2.6 x 10^3) =
2. 2.(8.3 x 10^6) - (3.0 x 10^5) =
3. 3.(7.4 x 10^6) - (3.9 x 10^5) =
4. 4.(7.2 x 10^9) - (5.6 x 10^8) =
5. 5.(7.2 x 10^3) - (3.4 x 10^2) =
6. 6.(6.5 x 10^4) - (7.0 x 10^3) =
7. 7.(1.8 x 10^3) - (3.6 x 10^2) =
8. 8.(7.2 x 10^9) - (1.4 x 10^9) =
9. 9.(7.9 x 10^9) - (8.7 x 10^8) =
10. 10.(1.4 x 10^5) - (3.9 x 10^4) =
11. 11.(6.6 x 10^4) - (8.8 x 10^3) =
12. 12.(8.7 x 10^4) - (1.9 x 10^4) =
13. 13.(8.1 x 10^7) - (6.4 x 10^6) =
14. 14.(9.5 x 10^2) - (8.0 x 10^2) =
15. 15.(3.8 x 10^7) - (2.7 x 10^6) =
16. 16.(5.0 x 10^9) - (1.2 x 10^8) =