Notación científica:

1.
9.8 × 10^-8 + 2.2 × 10^-8 + 6 × 10^-8

2.
9.7 × 10⁸ + 7.9 × 10⁶

3.
1.9 × 10⁷ - 3.6 × 10⁴ - 3.5 × 10⁶

4.
8.2 × 10^-4 + 1.5 × 10^-3 + 2.6 × 10^-5

5.
2.3 × 10^-5 - 2.26 × 10^-4 - 3.75 × 10^-5​