计算:(1)17-8÷(-2)+4×(-3)2;(2)(-478)-(-512)+(-414)-(+318);(3)(1112-76+34-1324)×(-48);(4)|-79|÷(23-15)-13×(-4)2.-数学
题文
计算: (1)17-8÷(-2)+4×(-3)2; (2)(-4
(3)(
(4)|-
|
答案
(1)17-8÷(-2)+4×(-3)2 =17-(-4)+4×9 =17+4+36 =57; (2)(-4
=-4
=(-4
=-12
(3)(
|
题文
计算: (1)17-8÷(-2)+4×(-3)2; (2)(-4
(3)(
(4)|-
|
答案
(1)17-8÷(-2)+4×(-3)2 =17-(-4)+4×9 =17+4+36 =57; (2)(-4
=-4
=(-4
=-12
(3)(
|