Verified answer

а)

[tex]1 \div 1 \frac{1}{4} = 1 \div \frac{5}{4} = 1 \times \frac{4}{5} = \frac{4}{5} [/tex]

б)

[tex]3 \div 1 \frac{1}{2} = 3 \div \frac{3}{2} = 3 \times \frac{2}{3} = 2[/tex]

в)

[tex]12 \div 2 \frac{2}{3} = 12 \div \frac{8}{3} = 12 \times \frac{3}{8} = \frac{9}{2} = 4 \frac{1}{2} = 4.5[/tex]

г)

[tex]1 \div 3 \frac{5}{6} = 1 \div \frac{23}{6} = 1 \times \frac{6}{23} = \frac{6}{23} [/tex]

д)

[tex]45 \div 3 \frac{1}{3} = 45 \div \frac{10}{3} = 45 \times \frac{3}{10} = \frac{27}{2} = 13 \frac{1}{2} = 13.5[/tex]

е)

[tex]0 \div 4 \frac{8}{9} = 0 \div \frac{44}{9} = 0 \times \frac{9}{44} = 0[/tex]

ж)

[tex]120 \div 1 \frac{4}{5} = 120 \div \frac{9}{5} = 120 \times \frac{5}{9} = \frac{200}{3} = 66 \frac{2}{3} [/tex]

з)

[tex]320 \div 3 \frac{1}{5} = 320 \div \frac{16}{5} = 320 \times \frac{5}{16} = 100[/tex]