Calc a) 1
[tex]1 \frac{1}{5} \times 2 \frac{1}{2 } = [/tex]
[tex] \frac{8}{15} \div 5 \frac{1}{3} = [/tex]
[tex]2 \frac{1}{4} \times 3 \frac{1}{3} = [/tex]
[tex] - 5 \frac{5}{11} \times 2 \frac{1}{5 = } [/tex]
[tex] - 5 \frac{5}{6} \div ( - 3 \frac{8}{9} ) = [/tex]

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