[tex]2,2\cdot10^{5} \ mm = 2,2\cdot10^{5}\cdot10^{-1} \ cm =2,2\cdot10\boxed{^{4}} \ cm\\\\9\cdot10^{-4} \ m = 9\cdot10^{-4}\cdot10^{-3} \ km = 9\cdot10\boxed{^{-7}} \ km\\\\9,7\cdot10^{6} \ cm = 9,7\cdot19^{6}\cdot10^{-2} \ m = 9,7\cdot10\boxed{^{4}} \ m\\\\4,9\cdot10^{-2} \ cm = 4,9\cdot10^{-2}\cdot 10^{-2} \ m = 4,9\cdot10\boxed{^{-4}} \ m[/tex]
