题目内容
(1)(-8)+(-13):
(2)(-4.25)-(-3.25);
(3)(-0.5)×(-8);
(4)(+18)÷(-0.25);
(5)-8+31-24-13;
(6)-6+(-32)-|-12+7|+(-2-7);
(7)-|-23|-|-6-7×2|+|-13|×(-2);
(8)-33×(-3)-(-2.5)÷(-0.1)+(-2)
(2)(-4.25)-(-3.25);
(3)(-0.5)×(-8);
(4)(+18)÷(-0.25);
(5)-8+31-24-13;
(6)-6+(-32)-|-12+7|+(-2-7);
(7)-|-23|-|-6-7×2|+|-13|×(-2);
(8)-33×(-3)-(-2.5)÷(-0.1)+(-2)
(1)原式=-(8+13)=-21;
(2)原式=-4.25+3.25=-1;
(3)原式=4;
(4)原式=18×(-4)=-72;
(5)原式=(-8-24-13)+31=-45+31=-14;
(6)原式=-6-32-5-9=-52;
(7)原式=-23-20-26=-69;
(8)原式=99-25-2=72.
(2)原式=-4.25+3.25=-1;
(3)原式=4;
(4)原式=18×(-4)=-72;
(5)原式=(-8-24-13)+31=-45+31=-14;
(6)原式=-6-32-5-9=-52;
(7)原式=-23-20-26=-69;
(8)原式=99-25-2=72.
练习册系列答案
相关题目