$150\div10\%=$ $\frac{9}{20}-\frac{7}{30}=$ $7\times60\%=$
$9.56 + 0.8=$ $720\div24=$ $\frac{9}{10}-\frac{7}{15}=$
$0.5\times4.4=$ $6.5\times60\%=$ $\frac{7}{9}+\frac{1}{3}=$
$\frac{3}{4}\div\frac{8}{9}=$ $\frac{1}{8}\div\frac{1}{10}=$ $3.3 - 0.27=$
$\frac{8}{15}+\frac{1}{10}=$ $2.9 - 1.88=$ $7.2\times0.3=$
$\frac{4}{3}-\frac{1}{22}=$ $25.2\div0.9=$ $\frac{5}{4}-\frac{4}{5}=$
$\frac{2}{5}+\frac{4}{3}=$ $3.2\times80\%=$ $\frac{7}{8}\times\frac{4}{35}=$
$\frac{3}{8}\times80\%=$ $2.4 - 2.25=$ $\frac{3}{14}\div\frac{6}{7}=$
$\frac{6}{25}+\frac{2}{5}=$ $63\div\frac{3}{7}=$ $\frac{8}{7}\times\frac{13}{14}=$
$240\times5=$ $300\times0.1=$ $\frac{1}{4}+\frac{2}{5}=$

1500 $\frac{13}{60}$ 4.2
10.36 30 $\frac{13}{30}$
2.2 3.9 $\frac{10}{9}$
$\frac{27}{32}$ $\frac{5}{4}$ 3.03
$\frac{19}{30}$ 1.02 2.16
$\frac{85}{66}$ 28 $\frac{9}{20}$
$\frac{26}{15}$ 2.56 $\frac{1}{10}$
$\frac{3}{10}$ 0.15 $\frac{1}{4}$
$\frac{16}{25}$ 147 $\frac{52}{49}$
1200 30 $\frac{13}{20}$

$x:12=\frac{7}{4}:2.8$ $4:x = 2:11$ $\frac{1}{4}:\frac{5}{9}=\frac{3}{10}:x$

$x = 7.5$ $x = 22$ $x = \frac{2}{3}$