1.24×0.24=0.2976 1.24×0.24≈0.30 (保留两位小数) 1.24×0.24≈0.298 (精确到0.001) 1.24×0.24的积是(四位小数0.2976),保留两位小数是(0.30),精确到0.001约是(0.298)
