(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4)
=1.25-0.5-0.75+1.75
=0.75-0.75+1.75
=1.75
(2),(-0.5)-(3又1/4)+2.75-(+7又1/2)
=-0.5-3.25+2.75-7.5
=(-0.5-7.5)+(2.75-3.25)
=-8-0.5
=-8.5
2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75
(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3]
(3),如果|a|=3,|b|=1,求:(1)|a-b|的值 (2)若a>b,求a+b的值
(4),计算:(+1)+(-2)+(+3)+(-4)+......+(+99)+(-100)
(5),(-27)/9
(6),-0.125/8/3
(7),(-0.91)/(-0.13)
(8),(-23)/(-3)*1/3
输入内容已经达到长度限制还能输入 9999 字
1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4)
=1.25-0.5-0.75+1.75
=0.75-0.75+1.75
=1.75
(1)原式=5/4-2/4-3/4+7/4=7/4;(2)原式=-2/4-13/4+11/4-30/4=-8.5
1.75