第25页 - 江苏版实验班提优训练数学六年级上下册答案

12

0.008

1.01

72

200

$\frac{1}{2}$

$\frac{2}{3}$

$\frac{25}{36}$

$解:\frac {1}{8}x=2$

$x=2×8$

$x=16$

$解:\frac{3}{5}x=50-20$

$\frac{3}{5}x=30$

$x=30×\frac{5}{3}$

$x=50$

$解:2x=\frac{6}{5}$

$x=\frac{6}{5}×\frac{1}{2}$

$x=\frac{3}{5}$

$=\frac{12}{7}×\frac{7}{9}$

$=\frac{12}{9}$

$=\frac{4}{3}$

$=\frac {3}{8}×\frac {5}{12}+\frac {3}{8}×\frac {7}{12}$

$=\frac {3}{8}×(\frac {5}{12}+\frac {7}{12})$

$=\frac {3}{8}×1$

$=\frac{3}{8}$

$=4-\frac {3}{8}×\frac {16}{7}-\frac {1}{7}$

$=4-\frac {6}{7}-\frac {1}{7}$

$=4-(\frac {6}{7}+\frac {1}{7})$

$=3$

$=\frac {7}{4}÷(\frac {9}{14}×\frac {7}{18})$

$=\frac {7}{4}÷\frac {1}{4}$

$=7$