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a) \frac{3}{6} + \frac{2}{6} = \frac{5}{6}
b) 1 \frac{5}{8} + 2 \frac{3}{8} = 3 \frac{8}{8} = 4
c) 6 - \frac{2}{7}= 5 \frac{5}{7}
d) \frac{1}{4}-\frac{1}{8}=\frac{2}{8}-\frac{1}{8}=\frac{1}{8}
e) 6\frac{1}{2}- 1\frac{1}{4}=\frac{13}{2}-\frac{5}{4}=\frac{26}{4}-\frac{5}{4}=\frac{21}{4}
f) 5 - 3\frac{3}{7}=1\frac{4}{7}
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f) 1\frac{1}{2}*\frac{2}{3}=\frac{3}{2}*\frac{2}{3}=1
g) 3\frac{1}{5}*2\frac{1}{4}=\frac{16}{5}*\frac{9}{4}=\frac{36}{5}
h) \frac{1}{9}*2\frac{1}{4}=\frac{1}{9}*\frac{19}{2}=\frac{19}{18}
i) \frac{3}{7}:\frac{7}{3}=\frac{3}{7}*\frac{3}{7}=\frac{9}{49}
j) 4\frac{1}{5}:\frac{7}{10}=\frac{21}{5}*\frac{10}{7}=6