Operații cu numere raționale – [2]

25 bonus points

0 successes

English

Partea a doua a exercițiilor ce necesită operații în mulțimea numerelor raționale și mai ales a celor negative.

Hey dude!

Two Bruises thinks that you have a weird avatar. Challenge him to change his Crocobetian opinion.

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
$1 \frac{2}{3} : (- \frac{5}{6}) =$
- $- \frac{2}{13}$
- + 2
- $- \frac{1}{2}$
- - 2
Correct

Incorrect
Question 2 of 10

2. Question
1 points
${(- 13 + 1234 - 76^{8} + 12^{234})}^{0} =$
- 1
- 1234
- -13
- 0
Correct

Incorrect
Question 3 of 10

3. Question
1 points
${(- \frac{2}{3})}^{4} \cdot {(- \frac{2}{3})}^{16} \cdot {(\frac{2}{3})}^{7} =$
- ${(- \frac{2}{3})}^{27}$
- ${(\frac{2}{3})}^{27}$
- ${(- \frac{2}{3})}^{21}$
- $\frac{2}{3}$
Correct

Incorrect
Question 4 of 10

4. Question
1 points
$\frac{3}{4} : (- \frac{9}{16}) + (- \frac{1}{5}) : (+ \frac{11}{15}) =$
- $\frac{11}{33}$
- $- \frac{53}{33}$
- $- \frac{54}{33}$
- $- \frac{52}{33}$
Correct

Incorrect
Question 5 of 10

5. Question
1 points
${(\frac{1}{2})}^{0} + {(\frac{1}{2})}^{1} + {(\frac{1}{2})}^{2} + {(\frac{1}{2})}^{3} + {(\frac{1}{2})}^{4} + {(\frac{1}{2})}^{5} =$
- $\frac{63}{16}$
- ${(\frac{1}{2})}^{15}$
- $\frac{63}{32}$
- 1
Correct

Incorrect
Question 6 of 10

6. Question
1 points
$- \frac{1}{4} \cdot \frac{12}{13} =$
- $\frac{3}{13}$
- -3
- $- \frac{3}{13}$
- -1
Correct

Incorrect
Question 7 of 10

7. Question
1 points
${(- \frac{1}{2})}^{5} =$
- $- \frac{1}{32}$
- -1
- $+ \frac{1}{16}$
- $- \frac{5}{32}$
Correct

Incorrect
Question 8 of 10

8. Question
1 points
$3 - 1 \frac{1}{3} : \frac{1}{3} - (- \frac{1}{3} - \frac{2}{3}) =$
- $0$
- $\frac{1}{3}$
- $3$
- $\frac{4}{3}$
Correct

Incorrect
Question 9 of 10

9. Question
1 points
${[{(- \frac{2}{5})}^{6}]}^{13} =$
- ${(- \frac{3}{5})}^{68}$
- ${(- \frac{2}{5})}^{78}$
- ${(- \frac{2}{5})}^{87}$
- $- \frac{2}{78}$
Correct

Incorrect
Question 10 of 10

10. Question
1 points
$1 - \frac{1}{2} \cdot \frac{1}{3} =$
- $- \frac{5}{6}$
- $\frac{6}{5}$
- $\frac{5}{6}$
- $\frac{1}{2}$
Correct

Incorrect

Examples of questions from "Operații cu numere raționale – [2]"

${(- \frac{2}{3})}^{4} \cdot {(- \frac{2}{3})}^{16} \cdot {(\frac{2}{3})}^{7} =$
${(\frac{1}{2})}^{0} + {(\frac{1}{2})}^{1} + {(\frac{1}{2})}^{2} + {(\frac{1}{2})}^{3} + {(\frac{1}{2})}^{4} + {(\frac{1}{2})}^{5} =$
$\frac{3}{4} : (- \frac{9}{16}) + (- \frac{1}{5}) : (+ \frac{11}{15}) =$