Test radicali 2

Test radicali 2

7th Grade

10 Qs

quiz-placeholder

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Test radicali 2

Test radicali 2

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Adriana Ftadeev

Used 24+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Să se calculeze:

 62+(5)2\sqrt{6^2}+\sqrt{\left(-5\right)^2}  

11

1

61

 61\sqrt{61}   

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Să se calculeze:

 51832985\sqrt{18}-3\sqrt{2}-\sqrt{98}  

 525\sqrt{2}  

 68\sqrt{68}  

 25225\sqrt{2}  

 18\sqrt{18}  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Să se calculeze:

 75+21254207\sqrt{5}+2\sqrt{125}-4\sqrt{20}  

 959\sqrt{5}  

 51105\sqrt{110}   

0

 13513\sqrt{5}  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Fie:

 x=33+25+43105x=3\sqrt{3}+2\sqrt{5}+4\sqrt{3}-10\sqrt{5}  și  y=7323+455y=7\sqrt{3}-2\sqrt{3}+4\sqrt{5}-\sqrt{5}  . Atunci x+y și x-y sunt: 

 1235512\sqrt{3}-5\sqrt{5}  , respectiv  231152\sqrt{3}-11\sqrt{5}  

 123+13512\sqrt{3}+13\sqrt{5}  , respectiv  23+752\sqrt{3}+7\sqrt{5}  

 8-\sqrt{8}  , respectiv  585\sqrt{8}  

 73857\sqrt{3}-8\sqrt{5}  , respectiv  53 +355\sqrt{3\ }+3\sqrt{5}  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Să se calculeze:   125+12+458575\ \ \sqrt{125}+\sqrt{12}+\sqrt{45}-8\sqrt{5}-\sqrt{75}  


 33-3\sqrt{3}  

 333\sqrt{3}  

 1653316\sqrt{5}-3\sqrt{3}  

 53\sqrt{5}-\sqrt{3}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Aproximarea lui 3\sqrt{3}  prin lipsă cu o eroare mai mică decât o sutime și rotunjirea lui  434\sqrt{3}  cu o eroare mai mică decât o sutime sunt:


1,73 , respectiv 6,93

1,73 , respectiv 6,92

1,72 , respectiv 6,88

1,72 , respectiv 6,92

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Rezultatul calculului 4 +23223324\ +2\left|\sqrt{3}-2\right|-\left|2\sqrt{3}-3\sqrt{2}\right|   este:


 862+238-6\sqrt{2}+2\sqrt{3}  

 323\sqrt{2}  

 2322-3\sqrt{2}  

 843+328-4\sqrt{3}+3\sqrt{2}  

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