A-A+
计算(1)12-(-18)+(-7)-15(2)4+(-2)+(-4)+1+(2)(3)(-
问题详情
计算
(1)12-(-18)+(-7)-15
(2)4+(-2)+(-4)+1+(2)
(3)(-
(4)-
(5)(-0.125)×(-8)-[1-3×(-2)];
(6)23÷[(-2)3-(-4)];
(7)4.6-(-1
(8)
(9)-32-(-3)2+(-2)2-23
(10)(
参考答案
(1)原式=12+18-7-15=30-22=8;
(2)原式=4-2-4+1+2=1;
(3)原式=0;
(4)原式=-12+34-56-23=-6+9-10-812=-54;
(5)原式=1-1-6=-6;
(6)原式=23÷(-8+4)=-234;
(7)原式=4.6+1.2-1.64-0.75=7.85;
(8)原式=25×(-512)+821×74-12×2×72=-16+23-72=38;
(9)原式=-9-9+4-8=-22;
(10)原式=-3+10-4-18=-15.
考点: