第14页

信息发布者:


绝对值
0
D
C
$-6$
$0$
解:​$(-\frac {2}{3})×(-\frac {9}{4})$​
​$=\frac {2}{3}×\frac {9}{4}$​
​$=\frac {2×9}{3×4}$​
​$=\frac {18}{12}$​
​$=\frac {3}{2}$​
解:​$-1\frac {1}{3}×(-3\frac {1}{2})$​
​$=-\frac {4}{3}×(-\frac {7}{2})$​
​$=\frac {4}{3}×\frac {7}{2}$​
​$=\frac {4×7}{3×2}$​
​$=\frac {28}{6}$​
​$=\frac {14}{3}$​
解:​$(-1.2)×\frac {5}{2}$​
​$=-\frac {6}{5}×\frac {5}{2}$​
​$=-\frac {6×5}{5×2}$​
​$=-3$​
解:​$4\frac {2}{3}×(-3\frac {3}{7})$​
​$=\frac {14}{3}×(-\frac {24}{7})$​
​$=-\frac {14×24}{3×7}$​
​$=-16$​
解:​$(-\frac {1}{2})×(-\frac {2}{3})×(-3)$​
​$=\frac {1}{3}×(-3)$​
​$= - 1$​
解:​$-3.5×\frac {8}{7}×(-\frac {3}{4})$​
​$=-\frac {7}{2}×\frac {8}{7}×(-\frac {3}{4})$​
​$=(-4)×(-\frac {3}{4})$​
​$=3$​