Free Printable Operatii cu puteri-exercitii

1.

Bifati raspunsul corect ! Scris sub forma unei singure puteri

3^5\cdot3^9=

a)

$3^{14}$

b)

$3^{45}$

c)

$3^4$

d)

$3^{15}$

2.

Bifati raspunsul corect ! Scris sub forma unei singure puteri

3^9:3^5=

a)

$3^{14}$

b)

$3^{45}$

c)

$3^4$

d)

$3^{15}$

3.

Bifati raspunsul corect ! Scris sub forma unei singure puteri

\left(3^9\right)^5=

a)

$3^{14}$

b)

$3^{45}$

c)

$3^4$

d)

$3^{15}$

4.

Bifati raspunsul corect ! Scris sub forma de putere

\left(3\cdot5\right)^5=

obtinem:

a)

$3^{14}\cdot5^{14}$

b)

$15^5$

c)

$3^4\cdot5^4$

d)

$3^{15}\cdot5^3$

e)

$3^5\cdot5^5$

5.

Bifati raspunsul corect ! Aplicand reguli de calcul cu puteri, obtinem:

\left(3^7\cdot5^2\right)^5=

a)

$3^{14}$

b)

$3^{35}\cdot3^{10}$

c)

$3^4$

d)

$3^{15}$

e)

$3^{12}\cdot5^7$

6.

Bifati raspunsul corect ! Aplicand reguli de calculi cu puteri, obtinem:

\left(3^7\cdot5^2\right)^5=

a)

$3^{14}\cdot5^{14}$

b)

$3^{35}\cdot3^{10}$

c)

$3^2\cdot5^3$

d)

$3^{45}\cdot3^{25}$

e)

$3^5\cdot5^5$

7.

Ultima cifra a puterii

3^{2019}

este:

a)

3

b)

9

c)

7

d)

1

8.

Numarul $16$ se poate scrie sub forma de putere ca:

a)

$4^2$

b)

$16^1$

c)

$2^4$

d)

$16^0$

9.

Valoarea lui x din urmatoarea egalitate este:

\left(7^x\right)^9=7^{81}

a)

9

b)

7

c)

8

d)

6

10.

Rezultatul calculului

1^{2020}+0^{2020}+2020^0=

este:

a)

2021

b)

4041

c)

2

d)

3

Operatii cu puteri-exercitii

Total questions: 10

Worksheet time: 10mins

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