第35页

信息发布者:
解:
$(-27)÷12$
$=-(27÷12)$
$=-\dfrac{9}{4}$
解:
$10÷(-0.1)$
$=-(10÷0.1)$
$=-100$
解:
$(-\dfrac{12}{25})÷(-\dfrac{3}{5})$
$=\dfrac{12}{25}×\dfrac{5}{3}$
$=\dfrac{4}{5}$
解:
原式 = $(-24) × \dfrac{1}{6} × (-\dfrac{1}{4})$
= $-4 × (-\dfrac{1}{4})$
= 1
解:
原式 = $(-9) × \dfrac{2}{3} × \dfrac{2}{3} × (-\dfrac{9}{4})$
= $-6 × \dfrac{2}{3} × (-\dfrac{9}{4})$
= $-4 × (-\dfrac{9}{4})$
= 9
3
0
-25
$-3$
$-\dfrac{1}{6}$
$1$
$1$
$\dfrac{1}{b}$
B
D
解:原式$=-(91÷13)=-7$
解:原式$=\dfrac{4}{5}÷(-\dfrac{1}{5})=\dfrac{4}{5}×(-5)=-4$
解:原式$=(-\dfrac{22}{7})×(-\dfrac{1}{11})=\dfrac{22}{7}×\dfrac{1}{11}=\dfrac{2}{7}$