Notation scientifique. 15,24;653,2;154,65;1,653

[tex]1,52400000 * 10^{1} [/tex]
[tex]6,53200000* 10^{2} [/tex]
[tex]1,54650000* 10^{2} [/tex]
[tex]1,65300000 *10^{0} [/tex]

[tex]15,24=1,524*10^1 \\653,2=6,532*10^2 \\ 154,65=1,5465*10^2 \\ 1,653=1,653*10^0 [/tex]