第9页

信息发布者:
9
$\dfrac{1}{10}$
48
$\dfrac{29}{20}$
1.25
$\dfrac{8}{7}$
0.5
$\dfrac{1}{25}$
0.32
$=2-\dfrac{3}{8}×\dfrac{16}{7}-\dfrac{1}{7}$
$=2-\dfrac{6}{7}-\dfrac{1}{7}$
$=2-(\dfrac{6}{7}+\dfrac{1}{7})$
$=2-1$
$=1$
$=\dfrac{3}{4}×(\dfrac{7}{15}-\dfrac{3}{15})×\dfrac{3}{2}$
$=\dfrac{3}{4}×\dfrac{4}{15}×\dfrac{3}{2}$
$=\dfrac{1}{5}×\dfrac{3}{2}$
$=\dfrac{3}{10}$
$=[1-(\dfrac{9}{12}+\dfrac{1}{12})]×\dfrac{3}{2}$
$=[1-\dfrac{10}{12}]×\dfrac{3}{2}$
$=\dfrac{1}{6}×\dfrac{3}{2}$
$=\dfrac{1}{4}$
$=13×\dfrac{9}{13}+\dfrac{1}{9}×\dfrac{9}{13}$
$=9+\dfrac{1}{13}$
$=9\dfrac{1}{13}$
$=12-4×2$
$=12-8$
$=4$
$=3.8×(5.2+4.8)$
$=3.8×10$
$=38$