bonjour
A = 10⁵ x (10⁻³)⁴ = 10⁵ x 10⁻¹² = 10 ⁻⁷
B = (10³)³ x ¹⁰⁹ = 10 ⁹⁺¹⁰⁹ = 10 ¹¹⁸
C = 2³ x 5³ x 10⁸ = 10³ x 10⁸ = 10¹¹
D = 10⁻⁹ / 10⁶ = 10⁻¹⁵
E = 10 ⁵ / 10⁻² = 10 ⁷
F = 10⁻⁸ x 10 / 10 ⁻³ = 10⁻⁷:10⁻³ = 10 ⁻⁴
G = 10 ²⁶ x 10 ⁻¹⁸ sur 10⁻²⁸ x 10 ⁻¹⁶
= 10 ⁸sur 10 ⁻⁴⁴ = 10²⁵
