Bonjour,
10² × 10⁴ = 10²⁺⁴ = 10⁶
10⁷ ₓ 10⁻¹¹ = 10⁷⁻¹¹ = 10⁻⁴
10⁻⁴ ₓ 10⁻⁷ = 10⁻⁴⁻⁷ = 10⁻¹¹
(10⁻³)⁻⁹ = 10⁻³ˣ⁻⁹ = 10²⁷
[tex]\frac{10^1^2}{10^8}[/tex] = 10¹²⁻⁸ = 10⁴
[tex]\frac{10^8}{10^1^5}[/tex] = 10⁸⁻¹⁵ = 10⁻⁷
(10⁴)⁷ = 10⁴ˣ⁷ = 10²⁸
(10⁶)⁻⁸ = 10⁶ˣ⁻⁸ = 10⁻⁴⁸
[tex]\frac{10}{10^7}[/tex] = 10¹⁻⁷ = 10⁻⁶
[tex]\frac{10^5}{10^-^9}[/tex] = 10⁵⁻⁽⁻⁹⁾ = 10¹⁴
[tex]\frac{1}{10^-^3}[/tex] = 10³
[tex]\frac{1}{10^5}[/tex] = 10⁻⁵
En espérant t'avoir aidé :)