[tex]2 \frac{1}{2} + 2 \frac{3}{4} + \frac{1}{5} = \frac{5}{2} + \frac{11}{4} + \frac{1}{5} = \frac{100}{40} + \frac{110}{40} + \frac{8}{40} = \frac{218}{40} = 5 \frac{18}{40} = 5 \frac{9}{20} [/tex]
[tex]5 \frac{3}{4} - 2 \frac{2}{5} = \frac{23}{4} - \frac{12}{5} = \frac{115}{20} - \frac{48}{20} = \frac{67}{20} = 3 \frac{7}{20} [/tex]
[tex] \frac{2}{3} \times 1 \frac{2}{5} \times 1 \frac{1}{2} = \frac{2}{3} \times \frac{7}{5} \times \frac{3}{2} = \frac{42}{30} = \frac{21}{15} = \frac{7}{5} = 1 \frac{2}{5} [/tex]
[tex]3 \frac{1}{3} \div 2 \frac{1}{2} = \frac{10}{3} \times \frac{2}{5} = \frac{4}{3} = 1 \frac{1}{3} [/tex]
