a) 7dm =\(\dfrac{7}{10}\)m = 0,7m b) 9cm =\(\dfrac{9}{100}\)m = 0,09m
5dm =\(\dfrac{5}{10}\)m = 0,5m 3cm = \(\dfrac{3}{100}\)m = 0,03m
2mm = \(\dfrac{2}{1000}\)m = 0,002m 8mm = \(\dfrac{8}{1000}\)m = 0,008m
4g = \(\dfrac{4}{1000}\)kg = 0,004kg 6g = \(\dfrac{6}{1000}\)kg = 0,006kg