第35页 - 亮点给力提优课时作业本六年级数学江苏版

$\frac {1}{5}$

1

2

$\frac{3}{32}$

$\frac{1}{10}$

$\frac{1}{1000}$

$\frac{1}{7}$

$\frac {1}{48}$

$\frac {7}{80}$

$\frac{16}{7}$

$\frac {75}{16}$

$\frac{7}{5}$

D

$\frac{54}{5}÷24=\frac{9}{20}(克)$

$\frac {9}{20}×3=\frac {27}{20}(克)$

$答：则3盆吊兰一共能吸收\frac {27}{20}克甲醛。$

$\frac{84}{5}$

$\frac{10}{7}$

$\frac{1}{26}\ $

$\frac{4}{3}-\frac{3}{4}=\frac{7}{12}\ $

$\frac{5}{4}-\frac{4}{5}=\frac{9}{20}\ $

$\frac{6}{5}-\frac{5}{6}=\frac{11}{30}\ $

$\frac{9}{8}一 \frac{8}{9}=\frac{17}{72}\ $

$\frac{17}{72}＜\frac{11}{30}＜\frac{9}{20}＜\frac{7}{12}，$

$最大的差是\frac{7}{12}。$

$\frac{7}{12}÷4=\frac{7}{48}\ $

$\frac{24}{25}÷2=\frac{12}{25}(千米)$

$\ \frac{12}{25}÷3=\frac{4}{25}(千米) $

$答：平均每天挖\frac {4}{25}千米。$