1 вариант 1) $$2\frac{1}{4} + 3\frac{2}{3}$$ 2) $$2\frac{3}{8} + 3\frac{5}{12}$$ 3) $$2,2 + 1\frac{1}{5}$$ 4) $$8\frac{1}{20} - 1\frac{2}{5}$$ 5) $$5 - 4\frac{2}{3}$$

Решим каждый пример по действиям:

1. $$2\frac{1}{4} + 3\frac{2}{3} = 2\frac{3}{12} + 3\frac{8}{12} = 5\frac{11}{12}$$
2. $$2\frac{3}{8} + 3\frac{5}{12} = 2\frac{9}{24} + 3\frac{10}{24} = 5\frac{19}{24}$$
3. $$2,2 + 1\frac{1}{5} = 2\frac{2}{10} + 1\frac{1}{5} = 2\frac{1}{5} + 1\frac{1}{5} = 3\frac{2}{5}$$
4. $$8\frac{1}{20} - 1\frac{2}{5} = 8\frac{1}{20} - 1\frac{8}{20} = 7\frac{21}{20} - 1\frac{8}{20} = 6\frac{13}{20}$$
5. $$5 - 4\frac{2}{3} = 4\frac{3}{3} - 4\frac{2}{3} = \frac{1}{3}$$

Ответ:

1. $$5\frac{11}{12}$$
2. $$5\frac{19}{24}$$
3. $$3\frac{2}{5}$$
4. $$6\frac{13}{20}$$
5. $$\frac{1}{3}$$