bonsoir
20 mm = 0.02 m = 2 x 10 ⁻²
0.005 mm = 0.000 005 m = 5 x 10 ⁻⁶
0.005 m = 5 x 10 ⁻³
0 . 000 000 2 mm = 0. 000000 002 m = 0. 000 000 002 x 10 ⁻⁹
1/4 mm = 0.00 025 m = 2.5 x 10 ⁻⁴
18 cm = 0.18 m = 1.8 x 10 ⁻¹
70 cm = 0.7 cm = 7 x 10 ⁻¹
0.000 02 mm = 0.00 000 002 m = 2 x 10 ⁻⁸
