1. (2023·宁县) 直接写出得数。                                                                                                     

4.25+5.75＝	10﹣0.01＝	0.8×0.4＝	105×4＝	27+68＝
×  ＝	72÷  ＝	6.3+0.1＝	398×5≈	538÷9≈