计算:(1)-13×(-3)+(-15)×5(2)(23-1112-1415)×(-60)(3)-134-(-18)+338+(-214)(4)-42÷(-12)÷(-1)7+(118+113-34)×24.-数学
题文
计算: (1)-
(2)(
(3)-1
(4)-42÷(-
|
答案
(1)-
=1-1 =0; (2)(
=-
=-40+55+56 =71; (3)-1
=(-1
|
题文
计算: (1)-
(2)(
(3)-1
(4)-42÷(-
|
答案
(1)-
=1-1 =0; (2)(
=-
=-40+55+56 =71; (3)-1
=(-1
|