bonsoir
1/10 000 = 0.0001 = 1 x 10 ⁻⁴
2/ 23 mm = 0.023 m = 2.3 x 10 ⁻²
3/ 0.005 m = 5 x 10 ⁻³
4/ 70 cm = 0.70 m = 7 x 10 ⁻¹
5/ 2/100 mm = 0.02 mm = 2 x 10 ⁻²
6/ 0.000 000 2 mm = 2 x 10 ⁻⁷ mm
7/ 0.5 mm = 5 x 10 ⁻¹ mm
8/ 0.25 mm = 2.5 x 10 ⁻¹ mm
9/ 18 cm = 1.8 x 10 cm