题目内容
-(-+-)÷(-)
计算题
[(-m)2·(-m2)]3
[2124+(-2139)-(-495)-480.5]×(-4.2)
×(-16)×(-)×(-1)×8×(-0.25)
(-24)×(1-2-+1)
(-+-+)×(-24).
(-0.5)×(-1)××(-8)×
(1)(+56)÷(+7);
(2)(-56)÷(-7);
(3)(+4.8)÷(-1.2);
(4)(-3)÷(-5);
(5)0÷(-3.234);
(6)(-2)÷(-7)×(-4.2).
计算
(-1)÷3÷(-3)