Matematică – operații elementare cu nr. reprezentate prin litere

20 bonus points

53 successes

English

Acest test verifică dacă elevul știe să adune, scadă, înmulțească, împartă sau să ridice la putere numerele reale reprezentate prin litere.

Beedo challenges you to solve this quiz.

If you want to save your points and appear in the Kidibot charts, you must be logged in. Create here an acount or login.

Question 1 of 10

1. Question
1 points
Efectuați: ${(\frac{2}{3} x^{2})}^{2} =$
- $\frac{4}{6} x^{4}$
- $\frac{2}{3} x^{4}$
- $\frac{4}{3} x^{2}$
- $\frac{4 x^{4}}{9}$
Correct

Incorrect
Question 2 of 10

2. Question
1 points
$(- \frac{15}{2} x^{5}) \div (\frac{3}{8} x^{2}) =$
- $- 20 x^{3}$
- $20 x^{3}$
- Niciuna din variante
- $20 x^{7}$
Correct

Incorrect
Question 3 of 10

3. Question
1 points
$(12 x^{5} + 6 x^{4}) \div (- 6 x^{4}) =$
- $2 x - 1$
- $0$
- $- 2 x - 1$
- $12 x^{5} - 1$
Correct

Incorrect
Question 4 of 10

4. Question
1 points
Cubul dublului numărului ${(2 x)}^{2}$ este egal cu:
- $256 x^{2}$
- ${(12 x)}^{2}$
- $512 x^{6}$
- $12 x^{6}$
Correct

Incorrect
Question 5 of 10

5. Question
1 points
${(- \sqrt{5} x^{3})}^{4} + {(- 2 x^{6})}^{2} =$
- $(- \sqrt{5} - 2) x^{12}$
- $29 x^{12}$
- $(\sqrt{5} - 2) x^{19}$
- $28 x^{12}$
Correct

Incorrect
Question 6 of 10

6. Question
1 points
$4 x - 9 x^{2} + 5 x^{2} - 7 x =$
- $- 11 x - 14 x^{2}$
- $- 11 x + 14 x^{2}$
- $- 4 x^{2} - 3 x$
- $- 4 x^{2} + 3 x$
Correct

Incorrect
Question 7 of 10

7. Question
1 points
$(\frac{1}{4} x^{3}) \times (8 x^{4}) =$
- $\frac{8 x^{12}}{4}$
- 12
- $2 x^{7}$
- $12 x^{7}$
Correct

Incorrect
Question 8 of 10

8. Question
1 points
$3 \sqrt{5} x - 7 \sqrt{2} - 2 \sqrt{2} - 8 \sqrt{5} x =$
- $- 11 \sqrt{5} x - 5 \sqrt{2}$
- $- 5 \sqrt{5} x - 9 \sqrt{2}$
- Niciuna din variante
- $- 9 \sqrt{2} x - 5 \sqrt{5}$
Correct

Incorrect
Question 9 of 10

9. Question
1 points
$7 x^{3} - (3 x) \times (2 x^{2}) =$
- $8 x^{3}$
- $x^{4}$
- $8 x^{4}$
- $x^{3}$
Correct

Incorrect
Question 10 of 10

10. Question
1 points
$(21 x^{7}) \div (- 3 x^{4}) =$
- $- 7 x^{3}$
- $7 x^{3}$
- $18 x^{3}$
- $- 18 x^{3}$
Correct

Incorrect

Examples of questions from "Matematică – operații elementare cu nr. reprezentate prin litere"

$3 \sqrt{5} x - 7 \sqrt{2} - 2 \sqrt{2} - 8 \sqrt{5} x =$
$(- \frac{15}{2} x^{5}) \div (\frac{3}{8} x^{2}) =$
$(21 x^{7}) \div (- 3 x^{4}) =$

Pos.	Name	Entered on	Points	Result
Table is loading
No data available

Matematică – operații elementare cu nr. reprezentate prin litere

Quiz-summary

Information

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

Examples of questions from "Matematică – operații elementare cu nr. reprezentate prin litere"

Small Battles

Main Partner:

Supporters:

Average score
Your score

Matematică – operații elementare cu nr. reprezentate prin litere

Quiz-summary

Information

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

Examples of questions from "Matematică – operații elementare cu nr. reprezentate prin litere"

Kidibot recommends you also:

CUVÂNTUL, VOCALE ȘI CONSOANE

Cate silabe au cuvintele si … alte intrebari

Miss Spitfire: Reaching Helen Keller

Small Battles

Main Partner:

Supporters: