bonjour
756 = 7.56 x 10²
0.009 = 9 x 10 ⁻³
0.000 845 6 = 8.456 x 10 ⁻⁴
0.8571 = 8 .571 x 10 ⁻¹
47 890 = 4.790 x 10 ⁴
0.000 28 x 10 ⁻³ = 2.8 x 10 ⁻⁷
1 789 x 10 ⁻² = 1.789 x 10
10 235 x 10 ⁹ = 1.0235 x 10 ¹³
0.57 x 10 ⁴ = 5 .7 x 10 ³
5 430 x 10 ⁻¹ = 5.43 x 10 ²