bonjour
a = 4 x 1/8 x 16 x 1/32 x 64
a = 4/8 x 16/32 x 64
a = 4096/256 = 16
b = 4 + 1/8 x 16 - 1/32 x 64
b = 4 + 16/8 - 64/132
b = 4 + 2 - 16/33
b = 132/33 + 66/33 - 16/33
b = 182/33
1/ 3 000 x 10 ⁵ = 3 x 10 ⁸
2/ 75 x 10 ⁷ = 7.5 x 10 ⁸
3/ 400 x 10 ⁶ = 4 x 10 ⁸
4/ 5.2 x 10 ⁸
5/ 0.043 x 10 ³ = 4.3 x 10 ⁻²
6/ 0.75 x 10 ² = 7.5 x 10 ⁻¹
7/ 0.04 x 10 ⁴ = 4 x 10 ²
