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二、计算下面各题，怎样简便就怎样计算。
$(1.9 + 4.83 \div 2.3) \times 3.6$ $0.68 + 7.3 + 10.32 - 4.3$ $(5.9 + 1.65) \div 25\% - 10.4$
$0.16 \times 25 \times 1.8 + 2.2$ $\frac{5}{12} \div 38 + \frac{1}{38} \times \frac{7}{12}$ $4.6 \div [(1.3 - 0.38) \times 25]$
$\frac{13}{9} \div \frac{1}{3} \div (\frac{1}{4} + \frac{1}{2})$ $\frac{1}{4} + \frac{2}{7} \times \frac{1}{4} + \frac{5}{7} \div 4$ $25\% \div [\frac{1}{15} \times (40\% + 10\%)]$
$45 \times (1 - \frac{4}{9}) \div \frac{1}{8}$ $(\frac{1}{2} - \frac{1}{4} + \frac{1}{6}) \times 120$ $(1 - 62.5\%) \div \frac{25}{28} - 30\%$
$60.8 - 0.8 \times 6 \div 0.8 \times 6$ $8 \div \frac{8}{9} + \frac{8}{9} \div 8$ $(\frac{1}{9} - \frac{1}{12}) \times \frac{1}{4} \div \frac{1}{9}$
$(1.9 + 4.83 \div 2.3) \times 3.6$ $0.68 + 7.3 + 10.32 - 4.3$ $(5.9 + 1.65) \div 25\% - 10.4$
$0.16 \times 25 \times 1.8 + 2.2$ $\frac{5}{12} \div 38 + \frac{1}{38} \times \frac{7}{12}$ $4.6 \div [(1.3 - 0.38) \times 25]$
$\frac{13}{9} \div \frac{1}{3} \div (\frac{1}{4} + \frac{1}{2})$ $\frac{1}{4} + \frac{2}{7} \times \frac{1}{4} + \frac{5}{7} \div 4$ $25\% \div [\frac{1}{15} \times (40\% + 10\%)]$
$45 \times (1 - \frac{4}{9}) \div \frac{1}{8}$ $(\frac{1}{2} - \frac{1}{4} + \frac{1}{6}) \times 120$ $(1 - 62.5\%) \div \frac{25}{28} - 30\%$
$60.8 - 0.8 \times 6 \div 0.8 \times 6$ $8 \div \frac{8}{9} + \frac{8}{9} \div 8$ $(\frac{1}{9} - \frac{1}{12}) \times \frac{1}{4} \div \frac{1}{9}$
答案
14.4 14 19.8
9.4 $\frac{1}{38}$ 0.2
$\frac{52}{9}$ $\frac{1}{2}$ $\frac{15}{2}$
200 50 $\frac{3}{25}$
24.8 $9\frac{1}{9}$ $\frac{1}{16}$
9.4 $\frac{1}{38}$ 0.2
$\frac{52}{9}$ $\frac{1}{2}$ $\frac{15}{2}$
200 50 $\frac{3}{25}$
24.8 $9\frac{1}{9}$ $\frac{1}{16}$
