Bonjour
notation scientifique puis calcul :
A = (100 000 x 10 000 x 1 000 000 000)/(10 x 1 000)
A = (10^5 x 10^4 x 10^9)/(10^1 x 10^3)
A = 10^(5+4+9-1-3)
A = 10^(18-4)
A = 10^14
A = 100 000 000 000 000
B = 50 000 000 x 0,000 002
B = 5 x 10^7 x 2 x 10^(-6)
B = 10 x 10^(7-6)
B = 10^(1+1)
B = 10^2
B = 100
C = (30 000 x 300)^2
C = (3 x 10^4 x 3 x 10^2)^2
C = (9 x 10^(4+2))^2
C = (9 x 10^6)^2
C = 9^2 x (10^6)^2
C = 81 x 10^(6x2)
C = 81 x 10^12
C = 8,1 x 10 x 10^12
C = 8,1 x 10^13
C = 81 000 000 000 000
D = 0,000 003^4
D = (3 x 10^(-6))^4
D = 3^4 x (10^(-6))^4
D = 81 x 10^(-6x4)
D = 8,1 x 10 x 10^(-2)
D = 8,1 x 10^(1-2)
D = 8,1 x 10^(-1)
D = 0,81
