Odpowiedź:
z.6
1. 3cm + 10cm + 11cm = 24cm
2. 3m + 5m + 5m = 13m
3. 60cm - (11cm + 15cm) = 60cm - 26cm = 34cm
4. 28m - (7m + 5m) = 28m - 12m = 16m
5. 90cm - (10cm + 25cm) = 90cm - 35cm = 55cm
6. 60cm - (17cm + 13cm) = 60cm - 30cm = 30cm
