bonjour
A = 9 x 10 ⁶ x 5 x 10 ¹² sur 10 ¹⁶
= 45 x 10 ¹⁸ sur 10 ¹⁶
= 4.5 x 10 ²
B = 7 x 10 ⁴ sur 2 x 10 ⁶
= 3.5 x 10 ⁻²
C = 5.4 - 0.83 sur 0.01
= 4.57 : 0.01 = 457
= 4.57 x 10 ²
A = 10 ⁴⁸ x 10 ⁻¹¹ x 10 ³ sur 10 ⁻⁵ x 10 ³
= 10 ⁴⁰ sur 10 ⁻² = 10 ⁴²
B = 10 ⁻¹² : 10 ⁹ x 10 ⁻¹⁴
= 10 ⁻¹² : 10 ²³ = 10 ⁻³⁵
C = 10 ¹ : 10 ⁻³ = 10 ⁴
5 500 Ml = 2.025 x 10 ¹³
200 mL = 2. 025 x 10 ¹³ : 2 x 10²
= 1.0125 x 10 ¹¹ globules rouges
10 mL = 70 000 globules blancs
5 500 mL = 38 500 000 globules blancs = 3.85 x 10 ⁷
10 mL = 2 500 000 plaquettes
5 500 ml = 1 375 000 000 = 1.375 x 10 ⁹ plaquettes
