一、口算。
$1.5 - 0.13=$ $0.45\div0.09=$ $2.36\times5=$
$0.7\times1.1=$ $0.03\times300=$ $0.055\div0.11=$
$2.6\div13=$ $3.07 + 0.73=$ $9.4 - 7.55=$
$0.45 + 5.76=$ $0.75\times0.6=$ $0.049\div0.7=$
$37\div5=$ $8.3 - 4.13=$ $7.2\times0.2=$
$\frac{2}{3}+\frac{1}{2}=$ $\frac{9}{10}-\frac{3}{20}=$ $\frac{8}{9}-\frac{5}{12}=$
$\frac{4}{5}-\frac{5}{16}=$ $\frac{1}{6}+\frac{3}{4}=$ $\frac{4}{19}+\frac{5}{38}=$
$\frac{21}{10}+\frac{3}{10}=$ $\frac{7}{12}-\frac{19}{36}=$ $\frac{1}{2}-\frac{4}{21}=$
$\frac{4}{3}-\frac{4}{5}=$ $\frac{5}{6}-\frac{2}{3}=$ $\frac{2}{7}+\frac{3}{10}=$
$\frac{9}{10}-\frac{5}{6}=$ $\frac{7}{10}+\frac{2}{15}=$ $\frac{5}{6}-\frac{4}{5}=$

$1.37 5 11.80.77 9 0.50.2 3.8 1.856.21 0.45 0.077.4 4.17 1.44\frac{7}{6} \frac{3}{4} \frac{17}{36}\frac{39}{80} \frac{11}{12} \frac{13}{38}\frac{12}{5} \frac{1}{18} \frac{13}{42}\frac{8}{15} \frac{1}{6} \frac{41}{70}\frac{1}{15} \frac{5}{6} \frac{1}{30}$

二、计算下面各题，怎样简便就怎样计算。
$\frac{7}{15}+(\frac{7}{12}+\frac{8}{15})$ $\frac{28}{15}-(\frac{2}{3}+\frac{3}{5})$ $\frac{6}{13}+\frac{5}{8}+\frac{7}{13}+\frac{3}{8}$

$1\frac{7}{12} \frac{3}{5} 2$