Explications étape par étape :
A = 10²/ 10⁷ = 10²⁻⁷ = 10⁻⁵
B = 10⁻² + 10⁻³ = 1/10² + 1/10³ = 1/100 + 1/1000 = 1,1.10⁻²
C = 10 * 10⁻⁶ = 10¹ * 10⁻⁶ = 10¹⁻⁶ = 10⁻⁵
D = 1/10⁵ = 1 * 10⁻⁵ = 10⁻⁵
E = 0,01 × 0,001 = 1.10⁻² * 1.10⁻³ = 10⁻²⁻³ = 10⁻⁵
F = 10⁻⁷ / 10² = 10⁻⁷⁻² = 10⁻⁹
G = 10⁻³ / 100 = 10⁻³/10² = 10⁻³⁻² = 10⁻⁵
H = 10⁻⁸ × 1000 = 10⁻⁸ * 10³ = 10⁻⁸⁺³ = 10⁻⁵
I = ( 10⁻³ )² = 10⁻⁶