bonjour
41.5x10⁻³=0.0415
4 150 000x10⁻⁸=0.0415
41.5x10⁻⁴=4.15x10⁻³
0.0000415x10²=4.15x10⁻³
donc 41.5x10⁻⁴=0.0000415x10²
415x10⁻⁷=4.15x10⁻⁵
b) il reste 41500x10⁻⁸=4.15x10⁻⁴
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bonjour
41.5x10⁻³=0.0415
4 150 000x10⁻⁸=0.0415
41.5x10⁻⁴=4.15x10⁻³
0.0000415x10²=4.15x10⁻³
donc 41.5x10⁻⁴=0.0000415x10²
415x10⁻⁷=4.15x10⁻⁵
b) il reste 41500x10⁻⁸=4.15x10⁻⁴