(1)原式=-20-14+18-13=-47+18=-29;
(2)原式=-12+(-4)=-16;
(3)原式=-27+27-8+8=0;
(4)原式=-1[1/2]-1[1/4]-2[1/2]+3[3/4]+1[1/4]=-4+3[3/4]=−
1
4;
(5)原式=-9-10-9-20-9-…-90-9=-9×10+(-100×4-50)=-90-450=-540;
(6)原式=(-60+[1/16])×(-16)=960-1=959.
(1)原式=-20-14+18-13=-47+18=-29;
(2)原式=-12+(-4)=-16;
(3)原式=-27+27-8+8=0;
(4)原式=-1[1/2]-1[1/4]-2[1/2]+3[3/4]+1[1/4]=-4+3[3/4]=−
1
4;
(5)原式=-9-10-9-20-9-…-90-9=-9×10+(-100×4-50)=-90-450=-540;
(6)原式=(-60+[1/16])×(-16)=960-1=959.