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Transformati:
552km:9= ...m
7×40dm=....m
700cm-70mm=... cm
980dam-90m=... dam


Răspuns :

552km:9=552 000m:9=61 000m +3 000m=64 000m
7x40dm=7x400m=2 800m
700cm-70mm=700cm-7cm=693cm
980dam-90m=980dam-9dam=971dam