题目内容
计算:
(1)(-
)×(-
)×(-3);
(2)(-1
)×15×(-1
);
(3)(-12.5)×(-
)×(-4);
(4)[-
+
-
- (-
)]×(-36)
(1)(-
(2)(-1
(3)(-12.5)×(-
(4)[-
解:(1)-1;
(2)18;
(3)原式=-
×(-
)×(-4)
=-
×
×4
=-
;
(4)原式=[-
+
-
+
]×(-36)
= -
×(-36)+
×(-36)+(-
)×(-36)+
×(-36)
= 21-27+30-10
= 14
(2)18;
(3)原式=-
=-
=-
(4)原式=[-
= -
= 21-27+30-10
= 14
练习册系列答案
相关题目