$3.14×5=$ $\frac{16}{5} \div \frac{8}{5}=$ $0.35×0.6=$
$3.14×0.07=$ $\frac{7}{4} + \frac{1}{2}=$ $\frac{9}{5} - \frac{1}{4}=$
$3.14×80=$ $\frac{44}{5}×\frac{1}{8}=$ $9.1÷0.13=$
$3.14×0.02=$ $\frac{26}{5} \div 13=$ $\frac{5}{8} + \frac{1}{12}=$
$3.14×30=$ $\frac{4}{3} - \frac{1}{4}=$ $\frac{5}{12}×\frac{9}{10}=$
$3.14×0.6=$ $\frac{3}{5} + \frac{3}{7}=$ $\frac{3}{4} \div \frac{1}{4}=$
$3.14×70=$ $1.27×0.4=$ $\frac{10}{3}×\frac{3}{5}=$
$31.4×0.5=$ $0.9 - 0.09=$ $4.8÷0.24=$
$3.14×4=$ $25\%×40=$ $\frac{3}{4} \div \frac{1}{2}=$
$3.14×300=$ $\frac{2}{3} - \frac{2}{5}=$ $\frac{1}{2} + \frac{3}{8}=$

15.7 2 0.21 0.2198 $\frac{9}{4}$ $\frac{31}{20}$ 251.2 $\frac{11}{10}$ 70 0.0628 $\frac{2}{5}$ $\frac{17}{24}$ 94.2 $\frac{13}{12}$ $\frac{3}{8}$ 1.884 $\frac{36}{35}$ 3 219.8 0.508 2 15.7 0.81 20 12.56 10 $\frac{3}{2}$ 942 $\frac{4}{15}$ $\frac{7}{8}$

$4 \div \frac{7}{16} + 3 \div \frac{7}{16}$ $2.4 - 0.5×1.8÷0.9$ $37.5\%×\frac{2}{5} + \frac{2}{7}×37.5\%$

16 1.4 $\frac{9}{35}$