题目内容
直接写出结果:
(1)(+5)+(-7)=________.
(2)(-4)+(-6)=________.
(3)0+(+8)=________.
(4)(
)+(
)=________.
(5)(+6.21)+(+31.79)=________.
(6)(+976)+(-679)=________.
答案:-2,-10,8,0,38,297
解析:
解析:
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题目内容
直接写出结果:
(1)(+5)+(-7)=________.
(2)(-4)+(-6)=________.
(3)0+(+8)=________.
(4)(
)+(
)=________.
(5)(+6.21)+(+31.79)=________.
(6)(+976)+(-679)=________.
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