$\frac{1}{4} \div \frac{1}{9} =$ $\frac{2}{3} - \frac{1}{5} =$ $75\% \times \frac{1}{5} =$
$\frac{7}{12} + \frac{2}{3} =$ $2.05 \times 40 =$ $57.5 \div 2.5 =$
$0.6 \times 0.35 =$ $0.96 \div 0.4 =$ $3.75 - 2.8 =$
$18.84 + 1.16 =$ $\frac{3}{2} \times \frac{8}{21} =$ $\frac{7}{20} \div \frac{7}{10} =$
$\frac{1}{2} \times \frac{3}{10} =$ $5.32 \div 0.4 =$ $459 + 98 =$
$1.77 + 1.46 =$ $1.1 - 0.75 =$ $\frac{5}{8} \div \frac{5}{14} =$
$\frac{2}{15} + \frac{3}{5} =$ $46 \div 10\% =$ $\frac{3}{2} \times \frac{2}{45} =$
$5.5 - 0.28 =$ $\frac{2}{3} \times \frac{5}{32} =$ $0.13 + 0.77 =$
$\frac{5}{6} \div \frac{1}{15} =$ $2 - \frac{1}{3} =$ $0.25 \times 400 =$
$50 \times 30\% =$ $\frac{7}{9} \div \frac{1}{3} =$ $\frac{2}{7} \times \frac{7}{16} =$

$\frac{9}{4}$ $\frac{7}{15}$ $\frac{3}{20}$
$\frac{5}{4}$ 82 23
0.21 2.4 0.95
20 $\frac{4}{7}$ $\frac{1}{2}$
$\frac{3}{20}$ 13.3 557
3.23 0.35 $\frac{7}{4}$
$\frac{11}{15}$ 460 $\frac{1}{15}$
5.22 $\frac{5}{48}$ 0.9
$\frac{25}{2}$ $1\frac{2}{3}$ 100
15 $\frac{7}{3}$ $\frac{1}{8}$

$\frac{36}{x} = \frac{3}{4}$ $x : 36 = 6 : 18$ $\frac{2}{3} : x = \frac{1}{4} : \frac{5}{8}$

$x = 48$ $x = 12$ $x = \frac{5}{3}$