Operații cu numere reale

Operații cu numere reale

7th Grade

10 Qs

quiz-placeholder

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Operații cu numere reale

Operații cu numere reale

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Bianca-Nicoleta SECHEL

Used 5+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului

 2(64)24 2\cdot\left(\sqrt{6}-4\right)-\sqrt{24}\   este egal cu

 8-8  

 4-4  

 44  

 26+42\sqrt{6}+4  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Dintre următoarele seturi de numere, cel care conține numai numere raționale este:

0; 12; 6; 20;\ -12;\ 6;\ \sqrt{2}

5;7; 9; 11\sqrt{5};\sqrt{7};\ \sqrt{9};\ \sqrt{11}

1; 2,(3); 100; 561;\ 2,\left(3\right);\ -\sqrt{100};\ \frac{\text{5}}{\text{6}}

0; 10; 1000; 100\sqrt{0};\ -10;\ \sqrt{1000};\ 100

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului

 627:(33)+249-6\sqrt{27}:\left(3\sqrt{3}\right)+2\sqrt{49}  este:

 20-20  

 88  

 9292  

 8-8  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului  36+64\sqrt{36}+\sqrt{64}  este

100

10

14

 14\sqrt{14}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului  520\sqrt{5}\cdot\sqrt{20}  este

100

10

2 5\sqrt{5}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului  150÷6\sqrt{150}\div\sqrt{6}  este

 565\sqrt{6}  

5

 6\sqrt{6}  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Raționalizând fracția  66\frac{6}{\sqrt{6}}  ,obținem

 6\sqrt{6}  

1

 66\frac{\sqrt{6}}{6}  

 636\frac{\sqrt{6}}{36}  

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