Calculează: 2 347 × 4, 9388, 9368, Ce facem dacă produsul dintre o cifră și un factor dă un rezultat mai mare ca 9?, Scriem tot numărul (de exemplu 12) direct sub linie, în locul unei singure cifre., . Scriem cifra unităților la locul ei și ținem minte cifra zecilor pentru a o aduna la următorul calcul., O fabrică produce 1 256 de creioane pe zi. Câte creioane se produc în 8 zile?, 10 046, 10 048, Ce este asociativitatea în înmulțire?, Produsul rămâne același dacă grupăm factorii diferit, Produsul se schimbă dacă grupăm factorii diferit, În ce ordine începem să înmulțim cifrele unui număr? (De la unități spre sute sau invers?), De la unități spre sute, De la sute spre unități, Ce observi la rezultatul lui 1 234 × 9 comparat cu 1 234 × 10?, 1 234 × 9 este mai mic decât 1 234 × 10, 1 234 × 9 este mai mare decat 1 234 × 10, Într-un tren sunt 1 348 de pasageri într-un vagon. Câți pasageri sunt în 7 vagoane?, 9 636, 9 436, Ce este comutativitatea în înmulțire?, Produsul nu se schimbă dacă schimbăm ordinea factorilor, Produsul se schimbă dacă schimbăm ordinea factorilor, Ce se întâmplă dacă înmulțim cu 0?, Rezultatul este 0, pentru că orice număr înmulțit cu 0 este 0, Rezultatul rămâne același număr, pentru că 0 nu schimbă nimic, Cum poți verifica dacă ai făcut corect înmulțirea?, Împarți produsul la unul dintre factori; dacă obții celălalt factor, rezultatul este corect., Aduni factorii între ei și compari cu produsul; dacă suma e mai mare, rezultatul este corect.
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