

CRITERII DE DIVIZIBILITATE
Presentation
•
Mathematics
•
5th Grade
•
Medium
Dana Catana
Used 10+ times
FREE Resource
9 Slides • 22 Questions
1
CRITERII DE DIVIZIBILITATE

2
Multiple Choice
RECAPITULAM:
Un divizor al lui 26 este
3
6
13
4
3
Multiple Choice
22 este divizibil cu
4
12
11
3
4
Multiple Select
3 este un divizor al lui
22
21
12
11
5
Multiple Select
18 este
un divizor al lui 36
un multiplu al lui 3
un divizor al lui 105
un multiplu al lui 6
6
Multiple Choice
Numarul n=1+2+22+23+24+25 este divizibil cu
2
5
4
7
7
Cum recunoastem cand un numar natural n este divizibil cu un numar natural d?
Am putea face impartirea lui n la d
Amputea descoperi criterii de divizibilitate
8
Cum recunosc un numar care se imparte exact la 2?
Evident acesta este un numar par
Deci ultima sa cifra este un numar par
Avem astfel un criteriu cu ajutorul caruia decidem daca un numar se divide cu 2.
9
CRITERIUL DE DIVIZIBILITATE CU 2
Un numar natural se divide cu 2 daca cifra unitatilor sale este un numar par
10
Multiple Choice
12 se divide cu 2
a
f
11
Multiple Choice
231 se divide cu 2
a
f
12
Multiple Choice
n=1+4+42+43 este divizibil cu 2
a
f
13
Multiple Choice
n=(1+2+22)(1+5+52) este divizibil cu 2
a
f
14
Multiple Choice
n=(1+2+22)+(1+5+52) este divizibil cu 2
a
f
15
Cum recunosc un numar care se imparte exact la 5?
Evident acesta are ultima cifra egala cu 0 sau 5
16
CRITERIUL DE DIVIZIBILITATE CU 5
Un numar natural se divide cu 2 daca cifra unitatilor sale este 0 sau 5
17
Multiple Choice
24 se divide cu 5
a
f
18
Multiple Choice
120 se divide cu 5
a
f
19
Multiple Choice
n=1+4+42+43 este divizibil cu 5
a
f
20
Cum recunosc un numar care se imparte exact la 10?
Evident acesta are ultima cifra egala cu 0
21
Multiple Choice
45 se divide cu 10
a
f
22
Multiple Choice
450 se divide cu 10
a
f
23
Multiple Choice
n=27⋅5+2⋅57 se divide cu 10
a
f
24
Multiple Choice
n=1+3+32+33 se divide cu 10
a
f
25
Multiple Select
n=2+22+23+24+25+26+27+28 se divide cu
2
5
10
26
Cum recunosc un numar care se imparte exact la 102?
Evident acesta trebuie sa aiba ultimele doua cifre egale cu 0
27
Cum recunosc un numar care se imparte exact la 10n?
Evident acesta trebuie sa aiba ultimele n cifre egale cu 0
28
Multiple Choice
4200 se divide cu 100
a
f
29
Multiple Choice
520 se divide cu 100
a
f
30
Multiple Choice
n=22⋅53 se divide cu
100
1000
10000
31
Multiple Select
n=23⋅52 se divide cu
10
5
2
100
1000
CRITERII DE DIVIZIBILITATE

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