《2025年天天练口算六年级数学上册人教版》

(1)$80×\frac {2}{3}×\frac {1}{2}=\frac {80}{3}(棵)$
(2)$600×\frac {4}{5}×\frac {3}{4}=360(人)$

答案：
(1)$80×\frac {2}{3}×\frac {1}{2}=\frac {80}{3}(棵)$
(2)$600×\frac {4}{5}×\frac {3}{4}=360(人)$

$\frac {12}{35}×70= $
$\frac {7}{15}×\frac {1}{14}= $
$\frac {2}{3}×\frac {3}{4}= $
$\frac {1}{2}×\frac {1}{2}= $
$\frac {5}{6}×\frac {3}{5}= $
$\frac {17}{18}×\frac {9}{34}= $
$\frac {1}{4}+\frac {1}{4}= $
$\frac {7}{6}+\frac {5}{6}= $
$12×\frac {2}{3}= $
$\frac {1}{2}×2= $
$\frac {5}{8}×\frac {4}{5}= $
$25×\frac {3}{5}= $
$\frac {1}{2}×\frac {4}{17}= $
$\frac {8}{9}×\frac {9}{16}= $
$1.2×\frac {5}{4}= $
$\frac {4}{5}-\frac {4}{10}= $
$12×\frac {3}{4}= $
$56×\frac {6}{7}= $
$5.4×\frac {5}{6}= $
$\frac {3}{8}×48= $
$5.6×\frac {6}{7}= $

答案： 答案：
$\frac {12}{35}×70 = 24$
$\frac {7}{15}×\frac {1}{14}=\frac{1}{30}$
$\frac {2}{3}×\frac {3}{4}=\frac{1}{2}$
$\frac {1}{2}×\frac {1}{2}=\frac{1}{4}$
$\frac {5}{6}×\frac {3}{5}=\frac{1}{2}$
$\frac {17}{18}×\frac {9}{34}=\frac{1}{4}$
$\frac {1}{4}+\frac {1}{4}=\frac{1}{2}$
$\frac {7}{6}+\frac {5}{6} = 2$
$12×\frac {2}{3} = 8$
$\frac {1}{2}×2 = 1$
$\frac {5}{8}×\frac {4}{5}=\frac{1}{2}$
$25×\frac {3}{5} = 15$
$\frac {1}{2}×\frac {4}{17}=\frac{2}{17}$
$\frac {8}{9}×\frac {9}{16}=\frac{1}{2}$
$1.2×\frac {5}{4} = 1.5$
$\frac {4}{5}-\frac {4}{10}=\frac{2}{5}$
$12×\frac {3}{4} = 9$
$56×\frac {6}{7} = 48$
$5.4×\frac {5}{6} = 4.5$
$\frac {3}{8}×48 = 18$
$5.6×\frac {6}{7} = 4.8$