第118页 - 苏教版六年级数学同步练习答案（上下册）

B

C

$\frac{4}{7}$

$1\frac{1}{3}$

$\frac{7}{12}$

2.1

$\frac{2}{21}$

10

24

$\frac{5}{36}$

$=\frac {1}{7} ×\frac {1}{7}+7 ×7$

$=\frac {1}{49}+49$

$=49 \frac {1}{49}$

$=\frac {4}{25} \div (\frac {11}{15} ×\frac {9}{11})$

$=\frac {4}{25} \div \frac {3}{5}$

$=\frac {4}{15}$

$=(\frac {1}{2}+\frac {2}{3}-\frac {5}{18}) ×36$

$=\frac {1}{2} ×36+\frac {2}{3} ×36-\frac {5}{18} ×36$

$=18+24-10$

$=32$

$=15 ×\frac {9}{8}+15 ×\frac {7}{8}$

$=15 ×(\frac {9}{8}+\frac {7}{8})$

$=15 ×2$

$=30$

$\begin {aligned}解：x&=\frac {3}{14}×\frac {7}{12}\\x &=\frac {1}{8}\end {aligned}$

$\begin {aligned}解：\frac {1}{2}x&=2\\x &=4\end {aligned}$

$\begin {aligned}解：\frac {5}{7}x&=\frac {7}{8}×\frac {5}{14}\\\frac {5}{7}x&=\frac {5}{16}\\x &=\frac {7}{16}\end {aligned}$