Заполните таблицы, складывая дроби.

Заполним таблицы, складывая дроби: **Первая таблица:** 1. $$\frac{3}{19} + \frac{2}{19} = \frac{5}{19}$$ 2. $$\frac{3}{19} + \frac{5}{19} = \frac{8}{19}$$ 3. $$\frac{3}{19} + \frac{7}{19} = \frac{10}{19}$$ 4. $$\frac{7}{19} + \frac{2}{19} = \frac{9}{19}$$ 5. $$\frac{7}{19} + \frac{5}{19} = \frac{12}{19}$$ 6. $$\frac{7}{19} + \frac{7}{19} = \frac{14}{19}$$ 7. $$\frac{11}{19} + \frac{2}{19} = \frac{13}{19}$$ 8. $$\frac{11}{19} + \frac{5}{19} = \frac{16}{19}$$ 9. $$\frac{11}{19} + \frac{7}{19} = \frac{18}{19}$$ **Вторая таблица:** 1. $$\frac{6}{28} + \frac{7}{28} = \frac{13}{28}$$ 2. $$\frac{6}{28} + \frac{14}{28} = \frac{20}{28}$$ 3. $$\frac{6}{28} + \frac{11}{28} = \frac{17}{28}$$ 4. $$\frac{13}{28} + \frac{7}{28} = \frac{20}{28}$$ 5. $$\frac{13}{28} + \frac{14}{28} = \frac{27}{28}$$ 6. $$\frac{13}{28} + \frac{11}{28} = \frac{24}{28}$$ **Ответ:** Первая таблица: | + | 2/19 | 5/19 | 7/19 | |---|---|---|---| | 3/19 | 5/19 | 8/19 | 10/19 | | 7/19 | 9/19 | 12/19 | 14/19 | | 11/19 | 13/19 | 16/19 | 18/19 | Вторая таблица: | + | 7/28 | 14/28 | 11/28 | |---|---|---|---| | 6/28 | 13/28 | 20/28 | 17/28 | | 13/28 | 20/28 | 27/28 | 24/28 |