Răspuns :
438 cm+97cm=535cm
900dm-238 dm=663dm
78m×9=702m
123mm:3=41mm
2873m-1995+3786=4664m
1236cm+1764cm-999cm=2001
Explicație pas cu pas:
438 cm+97 cm=535 cm
900dm-238dm=662 dm
78m×9=702 m
123mm:3=41 mm
2 873m-1995m+3786m=878m+3786=4664
1236cm+1764cm-999cm=3 000cm-999cm=2 001cm