初一数学难题答:(四)用">","0,则a-ba (C)若ba (D)若a<0,ba (二)填空题: (1)零减去a的相反数,其结果是___; (2)若a-b>a,则b是___数; (3)从-3.14中减去-π,其差应为___; (4)被减数是-12(4/5),差是4.2,则减数应是___; (5)若b-a<-,则a,b的关系是___,若a-b<0,则a,b的关系是___...
探索规律的数学题答:1, 1, 2, 3, 5 21, 20, 18, 15, 11 8, 6, 7, 5, 6, 4 65536, 256, 16 1, 0, -1, 0 3968, 63, 8, 3