
Numere prime între ele. Cel mai mic multiplu comun - c.m.m.m.c
Presentation
•
Mathematics
•
6th Grade
•
Hard
Gabriela gabriela.maria.barsan@sgnicolaeiorga-sibiu.ro
Used 3+ times
FREE Resource
5 Slides • 4 Questions
1
Numere prime între ele. Cel mai mic multiplu comun - c.m.m.m.c
2
Numere prime între ele
Dacă două numere au cel mai mare divizor comun 1, spunem că sunt prime între ele.
(a; b) =1 înseamnă a, b prime între ele.
Ex: În desen avem (6; 35)=1, deci 6 și 35 sunt prime între ele.
3
Multiple Choice
Un număr prim cu 6 este:
6
2
5
3
4
Multiple Select
Numerele prime cu 2 sunt:
7
3
4
5
5
Cel mai mic multiplu comun - c.m.m.m.c
Este produsul factorilor primi comuni și necomuni luați o singură dată la puterea cea mai mare.
Pasul 1 : Descompunerea numerelor în produs de puteri de factori primi.
Ex :
24=23.31
180=22.32.51
6
Multiple Select
Pas 2: Determinăm factorii primi comuni și necomuni la cea mai mare putere.
Pentru
24=23.31
180=22.32.51
factorii primi care se înmulțesc sunt:
23
31
22
5
32
7
Așadar pentru numerele :
24=23.31
180=22.32.51
C.m.m.m.c este:
23. 32.51 = 8 . 9 . 5 = 360
8
Multiple Choice
C.m.m.m.c-ul numerelor
225=32.52
375=31.53
este:
32.52
31.52
31.53
32.53
9
Foarte bine!
Numere prime între ele. Cel mai mic multiplu comun - c.m.m.m.c
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