3. Складывать и вычитать смешанные дроби: a) 2 + 1/6 + 1 b) 2 + 1/4 + 1 1/4 c) 2 + 1/6 + 1/4 d) 1 + 1/4 + 1 e) 3 + 1 2/3 + 6 f) 3 1/2 + 7 g) 3 2/3 + 1 1/2 h) 5 2/15 + 3 2/9 i) 4 1/2 + 4 1/9 j) 1 3/4 + 2 1/8 k) 1 1/5 + 2 2/10 + 3 l) 8 1/3 + 1 5/10 m) 1 1/4 - 1/3 n) 2 1/3 - 1 1/2 o) 7 1/9 - 4 2/3

a) \( 2 + \frac{1}{6} + 1 = 3 \frac{1}{6} \) b) \( 2 + \frac{1}{4} + 1\frac{1}{4} = 3 \frac{2}{4} = 3 \frac{1}{2} \) c) \( 2 + \frac{1}{6} + \frac{1}{4} = 2 + \frac{2}{12} + \frac{3}{12} = 2 \frac{5}{12} \) d) \( 1 + \frac{1}{4} + 1 = 2 \frac{1}{4} \) e) \( 3 + 1\frac{2}{3} + 6 = 10 \frac{2}{3} \) f) \( 3 \frac{1}{2} + 7 = 10 \frac{1}{2} \) g) \( 3 \frac{2}{3} + 1\frac{1}{2} = 3 \frac{4}{6} + 1 \frac{3}{6} = 4 \frac{7}{6} = 5 \frac{1}{6} \) h) \( 5 \frac{2}{15} + 3\frac{2}{9} = 5\frac{6}{45} + 3 \frac{10}{45} = 8 \frac{16}{45} \) i) \( 4 \frac{1}{2} + 4\frac{1}{9} = 4 \frac{9}{18} + 4\frac{2}{18} = 8\frac{11}{18} \) j) \( 1\frac{3}{4} + 2\frac{1}{8} = 1\frac{6}{8} + 2\frac{1}{8} = 3 \frac{7}{8} \) k) \( 1\frac{1}{5} + 2\frac{2}{10} + 3 = 1 \frac{2}{10} + 2\frac{2}{10} + 3 = 6 \frac{4}{10} = 6 \frac{2}{5} \) l) \( 8 \frac{1}{3} + 1 \frac{5}{10} = 8 \frac{10}{30} + 1 \frac{15}{30} = 9 \frac{25}{30} = 9 \frac{5}{6} \) m) \( 1\frac{1}{4} - \frac{1}{3} = 1\frac{3}{12} - \frac{4}{12} = \frac{15}{12} - \frac{4}{12} = \frac{11}{12} \) n) \( 2\frac{1}{3} - 1\frac{1}{2} = 2 \frac{2}{6} - 1\frac{3}{6} = 1\frac{8}{6} - 1\frac{3}{6} = \frac{5}{6} \) o) \( 7\frac{1}{9} - 4\frac{2}{3} = 7\frac{1}{9} - 4\frac{6}{9} = 6 \frac{10}{9} - 4\frac{6}{9} = 2\frac{4}{9} \) Ответы: a) 3 1/6 b) 3 1/2 c) 2 5/12 d) 2 1/4 e) 10 2/3 f) 10 1/2 g) 5 1/6 h) 8 16/45 i) 8 11/18 j) 3 7/8 k) 6 2/5 l) 9 5/6 m) 11/12 n) 5/6 o) 2 4/9