1. 直接写出得数。
$1÷2+1÷4=$ $1÷6+5÷6=$ $5÷7÷2÷3=$
$6.3×5=$ $12×3÷4=$ $1÷2+2÷5=$
$3÷5×1÷2=$ $4÷5-1÷2=$ $2÷9÷1÷3=$
$6×3÷8=$ $1÷5×2÷3=$ $2÷5÷10=$
$1÷5×2÷1=$ $1÷2÷5=$ $\frac {2}{3}-( )=\frac {1}{6}$

$1÷2+1÷4=\frac{3}{4}$
$1÷6+5÷6=1$
$5÷7÷2÷3=\frac{5}{42}$
$6.3×5=31.5$
$12×3÷4=9$
$1÷2+2÷5=\frac{9}{10}$
$3÷5×1÷2=\frac{3}{10}$
$4÷5-1÷2=\frac{3}{10}$
$2÷9÷1÷3=\frac{2}{27}$
$6×3÷8=\frac{9}{4}$
$1÷5×2÷3=\frac{2}{15}$
$2÷5÷10=\frac{1}{25}$
$1÷5×2÷1=\frac{2}{5}$
$1÷2÷5=\frac{1}{10}$
$\frac{2}{3}-(\frac{1}{2})=\frac{1}{6}$

2. 脱式计算。（能简算的要简算）
$4.67-(2.98+0.67)$ $73.8×16-73.8×6$
$3÷\frac {3}{5}-\frac {3}{5}÷3$ $720÷5÷6$
$\frac {5}{8}÷[\frac {17}{12}-(\frac {5}{12}+\frac {1}{4})]$ $12×(\frac {1}{2}+\frac {2}{3}-\frac {1}{4})$
$6÷\frac {6}{7}+\frac {6}{7}×\frac {1}{6}$ $2018×\frac {2016}{2017}$
$5-(\frac {6}{7}÷\frac {3}{14}+\frac {3}{16})$ $\frac {13}{97}×95+\frac {26}{97}$

4.67-(2.98+0.67)
=4.67-0.67-2.98
=4-2.98
=1.02
73.8×16-73.8×6
=73.8×(16-6)
=73.8×10
=738
3÷$\frac{3}{5}$-$\frac{3}{5}$÷3
=3×$\frac{5}{3}$-$\frac{3}{5}$×$\frac{1}{3}$
=5-$\frac{1}{5}$
=4$\frac{4}{5}$
720÷5÷6
=720÷(5×6)
=720÷30
=24
$\frac{5}{8}$÷[$\frac{17}{12}$-($\frac{5}{12}$+$\frac{1}{4}$)]
=$\frac{5}{8}$÷[$\frac{17}{12}$-$\frac{5}{12}$-$\frac{1}{4}$]
=$\frac{5}{8}$÷[1-$\frac{1}{4}$]
=$\frac{5}{8}$÷$\frac{3}{4}$
=$\frac{5}{8}$×$\frac{4}{3}$
=$\frac{5}{6}$
12×($\frac{1}{2}$+$\frac{2}{3}$-$\frac{1}{4}$)
=12×$\frac{1}{2}$+12×$\frac{2}{3}$-12×$\frac{1}{4}$
=6+8-3
=11
6÷$\frac{6}{7}$+$\frac{6}{7}$×$\frac{1}{6}$
=6×$\frac{7}{6}$+$\frac{1}{7}$
=7+$\frac{1}{7}$
=7$\frac{1}{7}$
2018×$\frac{2016}{2017}$
=(2017+1)×$\frac{2016}{2017}$
=2017×$\frac{2016}{2017}$+1×$\frac{2016}{2017}$
=2016+$\frac{2016}{2017}$
=2016$\frac{2016}{2017}$
5-($\frac{6}{7}$÷$\frac{3}{14}$+$\frac{3}{16}$)
=5-($\frac{6}{7}$×$\frac{14}{3}$+$\frac{3}{16}$)
=5-(4+$\frac{3}{16}$)
=5-4$\frac{3}{16}$
=$\frac{13}{16}$
$\frac{13}{97}$×95+$\frac{26}{97}$
=$\frac{13}{97}$×95+$\frac{13}{97}$×2
=$\frac{13}{97}$×(95+2)
=$\frac{13}{97}$×97
=13