初中数学题,教教me~~!help!
1.把下面的有理数填在相应的大括号里:15,-3/8,0,0.15,-30,-12.8,22/5,+20,-60.哪个是正数,哪个是负数?
2.在数轴上,点A表示-3,从点A出发,沿数轴移动4个单位长到达点B,则点B表示的数是多少?
3.写出下列的绝对值:-125,+23,-3.5,0,-2/3,-3/2,0.05(哪个数的绝对值最大?哪个最小?)
4.将下列按从小到大顺序排列,用<排列:-0.25,+2.3,-0.15,0,-2/3,-3/2,-1/2,0.05
5.写出下列各数的相反数:-4,+2,-1.5,0,1/3,-9.4