PUTERI 2 | Mathematics

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PUTERI 2

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5th - 6th grade

Mathematics

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Question 1
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Q.
Baza puterii $12^{21}$ este:
answer choices
12
21
12
alternatives
21
answer explanation
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Question 2
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Q.
Exponentul puterii $15^{51}$ este
answer choices
15
51
15
alternatives
51
answer explanation
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Question 3
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Q.
Patratul numarului 18 este
answer choices
294
314
324
334
294
alternatives
314
324
334
answer explanation
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Question 4
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Q.
Calculand $4^5$ obtinem
answer choices
994
1024
1124
1224
994
alternatives
1024
1124
1224
answer explanation
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Question 5
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Q.
Rezultatul calculului
$6^0+0^6+1^6+6^1$
este
answer choices
18
13
12
8
18
alternatives
13
12
8
answer explanation
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Question 6
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Q.
Scrierea numarului 128 ca o putere cu baza 2 este
answer choices
$2^6$
$2^7$
$2^8$
$2^9$
 <math><semantics><mrow><msup><mn>2</mn><mn>6</mn></msup></mrow><annotation encoding="application/x-tex">2^6</annotation></semantics></math>26 
alternatives
 <math><semantics><mrow><msup><mn>2</mn><mn>7</mn></msup></mrow><annotation encoding="application/x-tex">2^7</annotation></semantics></math>27 
 <math><semantics><mrow><msup><mn>2</mn><mn>8</mn></msup></mrow><annotation encoding="application/x-tex">2^8</annotation></semantics></math>28 
 <math><semantics><mrow><msup><mn>2</mn><mn>9</mn></msup></mrow><annotation encoding="application/x-tex">2^9</annotation></semantics></math>29 
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Question 7
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Q.
Dintre numerele $7^{12}$ ; $7^{11}$ ; $7^9$
cel mai mic este
answer choices
$7^{12}$
$7^{11}$
$7^9$
 <math><semantics><mrow><msup><mn>7</mn><mn>12</mn></msup></mrow><annotation encoding="application/x-tex">7^{12}</annotation></semantics></math>712 
alternatives
 <math><semantics><mrow><msup><mn>7</mn><mn>11</mn></msup></mrow><annotation encoding="application/x-tex">7^{11}</annotation></semantics></math>711 
 <math><semantics><mrow><msup><mn>7</mn><mn>9</mn></msup></mrow><annotation encoding="application/x-tex">7^9</annotation></semantics></math>79 
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Question 8
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Dintre numerele $5^{20}$ ; $5^{21}$ ; $5^{18}$
cel mai mare este
answer choices
$5^{20}$
$5^{21}$
$5^{18}$
 <math><semantics><mrow><msup><mn>5</mn><mn>20</mn></msup></mrow><annotation encoding="application/x-tex">5^{20}</annotation></semantics></math>520 
alternatives
 <math><semantics><mrow><msup><mn>5</mn><mn>21</mn></msup></mrow><annotation encoding="application/x-tex">5^{21}</annotation></semantics></math>521 
 <math><semantics><mrow><msup><mn>5</mn><mn>18</mn></msup></mrow><annotation encoding="application/x-tex">5^{18}</annotation></semantics></math>518 
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Question 9
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Q.
Ultima cifra a numarului $6^{321}$ este
answer choices
1
2
3
6
1
alternatives
2
3
6
answer explanation
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Question 10
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Q.
Scrierea sub forma unei singure puteri a
numarului $5\cdot5^2\cdot5^3\cdot5$ este
answer choices
$5^5$
$5^6$
$5^7$
$5^8$
 <math><semantics><mrow><msup><mn>5</mn><mn>5</mn></msup></mrow><annotation encoding="application/x-tex">5^5</annotation></semantics></math>55 
alternatives
 <math><semantics><mrow><msup><mn>5</mn><mn>6</mn></msup></mrow><annotation encoding="application/x-tex">5^6</annotation></semantics></math>56 
 <math><semantics><mrow><msup><mn>5</mn><mn>7</mn></msup></mrow><annotation encoding="application/x-tex">5^7</annotation></semantics></math>57 
 <math><semantics><mrow><msup><mn>5</mn><mn>8</mn></msup></mrow><annotation encoding="application/x-tex">5^8</annotation></semantics></math>58 
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Question 11
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Q.
Jumatatea numarului $2^{24}$ este
answer choices
$2^{12}$
$1^{24}$
$1^{12}$
$2^{23}$
 <math><semantics><mrow><msup><mn>2</mn><mn>12</mn></msup></mrow><annotation encoding="application/x-tex">2^{12}</annotation></semantics></math>212 
alternatives
 <math><semantics><mrow><msup><mn>1</mn><mn>24</mn></msup></mrow><annotation encoding="application/x-tex">1^{24}</annotation></semantics></math>124 
 <math><semantics><mrow><msup><mn>1</mn><mn>12</mn></msup></mrow><annotation encoding="application/x-tex">1^{12}</annotation></semantics></math>112 
 <math><semantics><mrow><msup><mn>2</mn><mn>23</mn></msup></mrow><annotation encoding="application/x-tex">2^{23}</annotation></semantics></math>223 
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Question 12
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Q.
Rezultatul calculului
$\left(3\cdot3\cdot3\cdot3^3\right)^2:\left(3^4\right)^3\ este$
answer choices
$3^0$
3
$3^2$
$3^3$
 <math><semantics><mrow><msup><mn>3</mn><mn>0</mn></msup></mrow><annotation encoding="application/x-tex">3^0</annotation></semantics></math>30 
alternatives
3
 <math><semantics><mrow><msup><mn>3</mn><mn>2</mn></msup></mrow><annotation encoding="application/x-tex">3^2</annotation></semantics></math>32 
 <math><semantics><mrow><msup><mn>3</mn><mn>3</mn></msup></mrow><annotation encoding="application/x-tex">3^3</annotation></semantics></math>33 
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Question 13
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Q.
Scrierea numarului $7^7\cdot5+2\cdot7^7$

sub forma unei singure puteri este
answer choices
$7^8$
$7^{14}$
$7^{49}$
nu se poate
 <math><semantics><mrow><msup><mn>7</mn><mn>8</mn></msup></mrow><annotation encoding="application/x-tex">7^8</annotation></semantics></math>78 
alternatives
 <math><semantics><mrow><msup><mn>7</mn><mn>14</mn></msup></mrow><annotation encoding="application/x-tex">7^{14}</annotation></semantics></math>714 
 <math><semantics><mrow><msup><mn>7</mn><mn>49</mn></msup></mrow><annotation encoding="application/x-tex">7^{49}</annotation></semantics></math>749 
nu se poate
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Question 14
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Q.
$\ \ 6+8\cdot\left[32:4-5\cdot\left(4^3-7\cdot3^2\right)\right]$
answer choices
24
26
28
30
24
alternatives
26
28
30
answer explanation
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Question 15
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Q.
Ordinea crescatoare a numerelor
$a=4^{12};b=8^5;c=16^4$
este
answer choices
a<b<c
b<c<a
c<b<a
c<aa<b<c
alternatives
b<c<a
c<b<a
c<a<b
answer explanation
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