直接写出结果:(1)(-9)+(+4)=______;(2)(-9)-(+4)=______;(3)(-9)×(+4)=______; (4)(-9)÷(+4)
题型:填空题难度:一般来源:不详
直接写出结果: (1)(-9)+(+4)=______; (2)(-9)-(+4)=______; (3)(-9)×(+4)=______; (4)(-9)÷(+4)=______. |
答案
(1)(-9)+(+4)=-5;
(2)(-9)-(+4)=-9+(-4)=-13;
(3)(-9)×(+4)=-36;
(4)(-9)÷(+4)=-. 故答案为-5;-13;-36;-. |
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