计算:(1)(-61)-(-71)-|-8|-(-2);(2)3-[(-3)-(+12)];(3)(3-5)-(6-10).-数学

题目简介

计算:(1)(-61)-(-71)-|-8|-(-2);(2)3-[(-3)-(+12)];(3)(3-5)-(6-10).-数学

题目详情

计算:
(1)(-61)-(-71)-|-8|-(-2);
(2)3-[(-3)-(+12)];
(3)(3-5)-(6-10).
题型:解答题难度:中档来源:不详

答案

(1)(-61)-(-71)-|-8|-(-2),
=-61+71-8+2,
=-69+73,
=4;

(2)3-[(-3)-(+12)],
=3-(-3-12),
=3-(-15),
=3+15,
=18;

(3)(3-5)-(6-10),
=-2-(-4),
=-2+4,
=2.

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