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11. Completați spatiile libere:
a) 8 m +... m=1 dam; c) 13 dm +... dm = 10 m;
b) 17 m +...m= 10 dam; d) 12 mm + ... mm = 3 cm;
e) 15 m- 125 dm =...m
f)15 dm -23 cn=...cm
... cm.​