2 Abakus zbrajanje
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Video Source: www.youtube.com/watch?v=kxxZeLg3-sM
U ovom videozapisu objašnjeno je zbrajanje sljedećih brojeva: 4 i 3, 8 i 7, 204 i 406 te 610 i 400.
video, sharing, camera phone, video phone, free, upload
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