a,
36 dm=3,6 m 42cm=0,42m 57mm=0,057 m 454dm=45,4 m 6789 cm=67,89 m
36 dm 5 cm=3,65 m 49 cm 8mm=0,498 m 3 dm 5 cm 7 mm=0,357m
b, 4dm 4 mm=4,04 dm 376 mm 572 mm=9,48 dm 3m 25 mm30,25 dm
a(36dm=\(\frac{36}{10}\)m; 42cm=\(\frac{42}{100}\)m; 57mm=\(\frac{57}{1000}\)m; 454dm=\(\frac{454}{10}\)m; 67899cm=\(\frac{6789}{100}\)m;