第103页 - 苏教版六年级数学同步练习答案（上下册）

C

80%

C

1.1

0.55

5

0.4

$\frac{1}{3}$

$\frac{2}{15}$

$1\frac{1}{4}$

$\frac {3}{25}$

$=\frac {2}{3} ×\frac {8}{5}+\frac {1}{3} ×\frac {8}{5}$

$=(\frac {2}{3}+\frac {1}{3}) ×\frac {8}{5}$

$=\frac {8}{5}$

$=1400 ×1+1400 ×12 \%$

$=1400+168$

$=1568$

$=\frac {6}{13} ×4+4 ×\frac {7}{13}$

$=(\frac {6}{13}+\frac {7}{13}) ×4$

$=4$

$\begin {aligned}解：1.5x&=6.6\\x &=4.4\end {aligned}$

$\begin {aligned}解：0.75x&=15\\x &=20\end {aligned}$

$\begin {aligned}解：\frac {1}{4}x&=45\\x &=180\end {aligned}$