bonjour
72 000 = 7.2 x 10 ⁴
15.35 x 10 ³ = 1.535 x 10 ⁴
800 001 = 8 .00001 x 10 ⁵
3 x ( 10 ²) ⁵ = 3 x 10 ¹⁰
2 x 10 ⁵/10² = 2 x 10 ³
