问题
填空题
直接填出结果: (1)(-14)+(+20)=______; (2)-12-8=______; (3)100+(-100)=______; (4)0+(-6)=______. (5)-(
(6)(-0.625)×(-1.6)=______ (7)(+4)×(-5)=______ (8)(-3.25)×(+
(9)0.25×(-2.15)+0.75×(-2.15)=______; (10)(-4)×(-124)×(-0.25)=______. |
答案
(1)(-14)+(+20)=6;
(2)-12-8=-20;
(3)100+(-100)=0;
(4)0+(-6)=-6.
(5)-(
)3=-1 2 1 8
(6)(-0.625)×(-1.6)=1
(7)(+4)×(-5)=-20
(8)(-3.25)×(+
)=-2 13 1 2
(9)0.25×(-2.15)+0.75×(-2.15)=-2.15;
(10)(-4)×(-124)×(-0.25)=-124.
故答案为:(1)6;(2)-20;(3)0;(4)-6;(5)-
;(6)1;(7)-20;(8)-1 8
;(9)-2.15;(10)-124.1 2