Тест по предмету «Алгебра» на тему «сложение и вычитание дробей с разными знаменателями»

1. Вычислите: \(\frac{1}{3}+\frac{1}{4}\).

   A) \(\frac{5}{7}\)
   B) \(\frac{7}{12}\)
   C) \(\frac{1}{2}\)
   D) \(\frac{2}{7}\)

2. Вычислите: \(\frac{5}{6}-\frac{3}{8}\).

   A) \(\frac{1}{24}\)
   B) \(\frac{7}{24}\)
   C) \(\frac{11}{24}\)
   D) \(\frac{13}{24}\)

3. Вычислите: \(\frac{7}{10}+\frac{2}{15}\).

   A) \(\frac{3}{5}\)
   B) \(\frac{5}{6}\)
   C) \(\frac{11}{15}\)
   D) \(\frac{13}{15}\)

4. Вычислите: \(\frac{11}{12}-\frac{5}{18}\).

   A) \(\frac{13}{36}\)
   B) \(\frac{23}{36}\)
   C) \(\frac{5}{9}\)
   D) \(\frac{7}{12}\)

5. Вычислите: \(\frac{3}{14}+\frac{5}{21}\).

   A) \(\frac{17}{42}\)
   B) \(\frac{19}{42}\)
   C) \(\frac{4}{7}\)
   D) \(\frac{11}{35}\)

6. Вычислите: \(\frac{5}{7}-\frac{2}{9}\).

   A) \(\frac{29}{63}\)
   B) \(\frac{31}{63}\)
   C) \(\frac{33}{63}\)
   D) \(\frac{37}{63}\)

7. Вычислите: \(-\frac{2}{5}+\frac{7}{12}\).

   A) \(-\frac{11}{60}\)
   B) \(\frac{1}{60}\)
   C) \(\frac{11}{60}\)
   D) \(\frac{17}{60}\)

8. Вычислите: \(3\frac{1}{4}-1\frac{2}{3}\).

   A) \(1\frac{1}{12}\)
   B) \(1\frac{5}{12}\)
   C) \(1\frac{7}{12}\)
   D) \(1\frac{11}{12}\)

9. Вычислите: \(\frac{3}{4}-\frac{2}{5}+\frac{1}{6}\).

   A) \(\frac{19}{60}\)
   B) \(\frac{29}{60}\)
   C) \(\frac{31}{60}\)
   D) \(\frac{41}{60}\)

10. Найдите \(x\): \(x+\frac{3}{10}=\frac{7}{12}\).

    A) \(\frac{1}{60}\)
    B) \(\frac{7}{60}\)
    C) \(\frac{17}{60}\)
    D) \(\frac{29}{60}\)

Ответы

1 — B
2 — C
3 — B
4 — B
5 — B
6 — B
7 — C
8 — C
9 — C
10 — C