a) [latex] frac{2}{5} + frac{3}{10} + frac{4}{10} + frac{3}{10} [/latex] = [latex] frac{4}{10} + frac{3}{10} + frac{4}{10} + frac{3}{10} [/latex] = [latex] frac{13}{10} = 1 frac{3}{10} [/latex] b) [latex] frac{1}{4} + frac{3}{8} = frac{2}{8} + frac{3}{8} = frac{5}{8} [/latex] c) [latex] frac{1}{3} + frac{2}{9} = frac{3}{9} + frac{2}{9} = frac{5}{9} [/latex] d) [latex]1 frac{1}{6} + 2 frac{7}{12} = 1 frac{2}{12} + 2 frac{7}{12} = 3 frac{9}{12} [/latex] e) [latex] frac{3}{5} - frac{1}{10} = frac{6}{10} - frac{1}{10} = frac{5}{10} [/latex] f) [latex] frac{5}{3} - frac{5}{9} = frac{15}{9} - frac{5}{9} = frac{10}{9} = 1 frac{1}{9} [/latex] g) [latex]2 frac{1}{2} - frac{3}{4} = 2 frac{2}{4} - frac{3}{4} = 1 frac{1}{4} [/latex] h) [latex]4 frac{1}{3} - 1 frac{1}{6} = 4 frac{2}{6} - 1 frac{1}{6} = 3 frac{1}{6} [/latex]
