bonjour
49 000 000 = 4.9 * 10 ⁷
1 400 000 000 000 = 1.4 * 10 ¹²
57 centaines de milles = 5.7 x 10 x 10 ² x 10 ³ = 5.7 x 10 ⁶
320 millièmes = 3.2 x 10 ⁻¹
0.08 cent millièmes = 8 x 10 ⁻⁷
5 milliardièmes = 5 x 10 ⁻⁹
A = 2.8 x 10 ⁻⁴ x 10 ⁻³ = 2.8 x 10 ⁻⁷
B = 1 789 x 10 ⁻² = 1.789 x 10 ³ x 10 ⁻² = 1.789 x 10
C = 10 235 x 10 ⁹ = 1.0235 x 10 ⁴ x 10 ⁹ = 1.0235 x 10 ¹³
D = 0.57 x 10 ⁴ = 5.7 x 10 ⁻¹ x 10 ⁴ = 5.7 x 10 ³
E = 756 x 10 ⁴ = 7.56 x 10 ⁶
F = 54.3 x 10 ⁻³ = 5.43 x 10 x 10 ⁻³ = 5.43 x 10 ⁻²
