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Mathematics

7th

grade

Teza 7 -S1

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15 questions

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1. Multiple Choice
1 minute
1 pt
Radacina patrata a numarului 144 este:
11
12
13
14
2. Multiple Choice
2 minutes
1 pt
Rezultatul calculului
$\sqrt{81}+\sqrt{7^2}-\sqrt{16}$
este egal cu:
12
$\sqrt{114}$
13
$\sqrt{101}$
3. Multiple Choice
1 minute
1 pt
$Rationalizand\ \ \ numitorul\frac{9}{\sqrt{3}}$
obtinem:
$\sqrt{3}$
$2\sqrt{3}$
$3\sqrt{3}$
$9\sqrt{3}$
4. Multiple Choice
3 minutes
1 pt
Dintre numerele
$7\sqrt{2}\ ,\ \ 10\ \ ,\ \ 3\sqrt{7}\ ,\ \ 6\sqrt{3}$
cel mai mare este:
$7\sqrt{2}$
10
$3\sqrt{7}$
$6\sqrt{3}$
5. Multiple Choice
1 minute
1 pt
Rezultatul calculului
$3\sqrt{2}+\sqrt{8}$
este egal cu :
$3\sqrt{10}$
$\sqrt{30}$
$5\sqrt{2}$
Nu se poate calcula
6. Multiple Choice
2 minutes
1 pt
Media geometrica a numerelor 12 si 3 este egala cu:
15
9
6
4
7. Multiple Choice
5 minutes
1 pt
Rezultatul calculului
$2\sqrt{24}\cdot\left(\frac{3}{\sqrt{6}}-\frac{\sqrt{2}}{\sqrt{3}}\right)$
este egal cu :
2

4
6
8
8. Multiple Choice
5 minutes
1 pt
Calculand
$\left|1-2\sqrt{2}\right|-\left|\sqrt{2}-2\right|+\left|3-\sqrt{2}\right|$
se obtine:
2
$2\sqrt{2}$
$2+\sqrt{2}$
$2-\sqrt{2}$
9. Multiple Choice
3 minutes
1 pt
Calculand
$\sqrt{\frac{10^2-8^2}{5^2+12^2}}$
obtinem:
$\frac{6}{13}$
$\frac{2}{17}$
$\frac{6}{17}$
$\frac{2}{13}$
10. Multiple Choice
2 minutes
1 pt
ABCD est patrat iar BEC triunghi echilateral.Masura <ACE este:
$75\degree$
$90\degree$
$105\degree$
$120\degree$
11. Multiple Choice
3 minutes
1 pt
Daca ABCD este paralelogram atunci:
<BCD= 65⁰ si
<ABC = 115⁰
<BCD = 60⁰ si
<ABC = 120⁰
<BCD = 35⁰ si
<ABC = 145⁰
< BCD = 45⁰si
<ABC = 135⁰
12. Multiple Choice
3 minutes
1 pt
ABCD este dreptunghi cu $<AOB=60\degree$ si CD= 4cm.
Calculand AC + BD obtinem:
8 cm
12 cm
16 cm
Nu se poate calcula
13. Multiple Choice
5 minutes
1 pt
Rombul ABCD are perimetrul egal cu 24 cm si diagonala AC =6cm.Atunci:
$P_{ABC}=12\ cm\ si\ \ <ABC\ =100\degree$
$P_{ABC}=18cm\ \ \ \ \ \ \ \ si\ \ \ <ABC\ =90\degree$
$P_{ABC}=12\ cm\ \ \ \ \ \ \ si\ \ \ \ \ <ABC\ =120\degree$
$P_{ABC}=18\ cm\ \ \ \ \ \ \ \ \ si\ \ \ \ \ \ <ABC\ =120\degree$
14. Multiple Choice
5 minutes
1 pt
ABCD este trapez dreptunghic. Lungimea bazei mari DC este egala cu :
10 cm
8 cm
7 cm
6 cm
15. Multiple Choice
3 minutes
1 pt
Triunghiul ABC are AB=6cm ,BC = 4cm si AC = 7 cm. D este milocul laturii AB si N mijlocul laturii AC .Perimetrul patrulaterului BCED este egal cu :
17 cm
9,5 cm
12,5 cm
11,5 cm
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Teza 7 -S1

7thgrade

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