$2.7\div0.27=$ $0.58\div2.9=$ $2.5\times60=$
$1.3 - 0.5=$ $1.8\times500=$ $10.4\div2.6=$
$7.7\times4=$ $90 + 530=$ $\frac{7}{12}\times\frac{9}{10}=$
$1000 - 458=$ $\frac{5}{2}\times\frac{8}{15}=$ $\frac{21}{22}\div\frac{7}{8}=$
$20\%+\frac{7}{12}=$ $0.625\times4=$ $\frac{7}{8}+\frac{4}{15}=$
$4800\div12=$ $80.7\%-76.9\%=$ $41.6 - 6.2=$
$\frac{2}{7}+\frac{3}{4}=$ $\frac{3}{4}\times\frac{5}{4}=$ $14\div\frac{7}{10}=$
$\frac{5}{12}\times\frac{3}{10}=$ $\frac{4}{15}\div\frac{4}{17}=$ $\frac{44}{15}-\frac{11}{5}=$
$\frac{1}{4}+\frac{13}{24}=$ $\frac{1}{2}-\frac{3}{20}=$ $2\div\frac{2}{7}=$
$\frac{39}{45}\div\frac{13}{24}=$ $\frac{1}{6}+\frac{1}{2}=$ $\frac{9}{14}\times50\%=$

10 0.2 150
0.8 900 4
30.8 620 $\frac{21}{40}$
542 $\frac{4}{3}$ $\frac{12}{11}$
$\frac{47}{60}$ 2.5 $\frac{137}{120}$
400 3.8% 35.4
$\frac{29}{28}$ $\frac{15}{16}$ 20
$\frac{1}{8}$ $\frac{17}{15}$ $\frac{11}{15}$
$\frac{19}{24}$ $\frac{7}{20}$ 7
$\frac{8}{5}$ $\frac{2}{3}$ $\frac{9}{28}$

$\frac{4}{5}:x=\frac{2}{3}:\frac{1}{4}$ $7x + 5.3 = 7.4$ $x + 50\%x + 3.6 = 21.6$

$x = \frac{3}{10}$ $x = 0.3$ $x = 12$