Ако 2 9 . x = 7 9 \frac{2}{9}.\ x=\frac{7}{9} 9 2 . x = 9 7 , то да се намери х:

5 11 14 5\frac{11}{14} 5 1 4 1 1

Упражнение по математика

Authored by Миглена Стоилова

Mathematics

5th - 6th Grade

Used 11+ times

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12 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

На колко е равен израза
$\frac{8}{9}.\ \frac{25}{30}.\ \frac{27}{40}$ ?

$\frac{1}{2}$

$\frac{5}{9}$

$\frac{1}{3}$

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

$\frac{1}{8}$

$\frac{1}{4}$

$\frac{3}{8}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Вярно ли е, че
$\frac{7}{3}$ е реципрочна на $\frac{3}{7}$ ?

Вярно

Грешно

FILL IN THE BLANKS QUESTION

45 sec • 1 pt

Кое е реципрочното число на дробта $\frac{1}{5}$ ?

(a)

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Вярно ли е, че произведението на две реципрочни числа е равно на 1?

Не

Да

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Пресметнете: $\frac{15}{7}:\ \frac{5}{21}$

$\frac{1}{9}$

$\frac{1}{3}$

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Кое е грешното?

$\frac{19}{3}.\ \frac{3}{19}=1$

$\frac{9}{13}:\ \frac{9}{13}=1$

$\frac{9}{13}-\frac{9}{13}=0$

$\frac{9}{13}:\ \frac{13}{9}=1$

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Пресметнете: $\left(\frac{2}{9}+\frac{7}{18}\right).\ \frac{3}{5}$

$\frac{30}{11}$

$\frac{11}{30}$

$\frac{1}{3}$

$1\frac{8}{15}$

FILL IN THE BLANKS QUESTION

1 min • 1 pt

На колко е равен израза $\frac{5}{8}.\ \frac{5}{9}.\ \frac{9}{10}.0$ ?

(a)

10.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Пресметнете: $\left(1\frac{1}{80}+\frac{27}{32}\right).\ \frac{16}{27}$

$\frac{1}{10}$

$\frac{1}{2}$

$\frac{2}{5}$

$1\frac{1}{10}$

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Упражнение по математика

На колко е равен израза 89. 2530. 2740\frac{8}{9}.\ \frac{25}{30}.\ \frac{27}{40}98​. 3025​. 4027​ ?

Вярно ли е, че 73\frac{7}{3}37​ е реципрочна на 37\frac{3}{7}73​ ?

Кое е реципрочното число на дробта 15\frac{1}{5}51​ ? (a)

Вярно ли е, че произведението на две реципрочни числа е равно на 1?

Пресметнете: 157: 521\frac{15}{7}:\ \frac{5}{21}715​: 215​

Кое е грешното?

Пресметнете: (29+718). 35\left(\frac{2}{9}+\frac{7}{18}\right).\ \frac{3}{5}(92​+187​). 53​

На колко е равен израза 58. 59. 910.0\frac{5}{8}.\ \frac{5}{9}.\ \frac{9}{10}.085​. 95​. 109​.0 ? (a)

Пресметнете: (1180+2732). 1627\left(1\frac{1}{80}+\frac{27}{32}\right).\ \frac{16}{27}(1801​+3227​). 2716​

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На колко е равен израза
$\frac{8}{9}.\ \frac{25}{30}.\ \frac{27}{40}$ ?

Вярно ли е, че
$\frac{7}{3}$ е реципрочна на $\frac{3}{7}$ ?

Кое е реципрочното число на дробта $\frac{1}{5}$ ?

(a)

Пресметнете: $\frac{15}{7}:\ \frac{5}{21}$

Пресметнете: $\left(\frac{2}{9}+\frac{7}{18}\right).\ \frac{3}{5}$

На колко е равен израза $\frac{5}{8}.\ \frac{5}{9}.\ \frac{9}{10}.0$ ?

(a)

Пресметнете: $\left(1\frac{1}{80}+\frac{27}{32}\right).\ \frac{16}{27}$