Numere reale

Numere reale

7th Grade

9 Qs

quiz-placeholder

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Numere reale

Numere reale

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Dana Catana

Used 16+ times

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dacă aria unui pătrat este egală cu 1225 dm2 , atunci perimetrul pătratului este egal cu:

200 cm

140 cm

70 cm

1400 cm

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculând 

 9,1204\sqrt{9,1204}  se obtine

3,08

3,12

3,02

3,52

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculând   21\sqrt{21}  cu aproximaţie de   1100\frac{1}{100}  prin rotunjire se obţine: 

5,57

4,49

4,58

4,59

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2,5=72\left|x-2,5\right|=\frac{7}{2}  Soluţia în N a ecuaţiei  este

6

5

-1

0

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculând  92+122\sqrt{9^2+12^2}  se obtine


21

9

12

15

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media ponderată a numerelor: 3; -2; 4; -5 cu ponderile 1, 2, 3 respectiv 4 este:

1110\frac{11}{10}

98-\frac{9}{8}

89-\frac{8}{9}

910-\frac{9}{10}

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 a=1+3+5+...+1999a=\sqrt{1+3+5+...+1999}  este


1999

100

1000

2000

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