计算:(1)123+(-112)+413-412(2)-22+3×(-1)4-(-4)×5(3)-14×154÷(-6)-98(4)用简便方法计算:(-36911)÷9.-数学
题文
计算:(1)1
(2)-22+3×(-1)4-(-4)×5 (3)-14×
(4)用简便方法计算:(-36
|
答案
(1)原式=1
=1
=6-6 =0. (2)原式=-4+3×1-(-20) =-4+3+20 =19. (3)原式=-4×
=
=
(4)原式=(-36-
=-36×
=-4-
=-4
|
题文
计算:(1)1
(2)-22+3×(-1)4-(-4)×5 (3)-14×
(4)用简便方法计算:(-36
|
答案
(1)原式=1
=1
=6-6 =0. (2)原式=-4+3×1-(-20) =-4+3+20 =19. (3)原式=-4×
=
=
(4)原式=(-36-
=-36×
=-4-
=-4
|