1. (2023四下·大理期末) 直接写得数。                                                                                                                                      

20×150=	40×4=	270÷3=	5400÷9=
170＋50=	2500－800=	93÷3=	220×2=
62÷9≈	543÷6≈	88×22≈	71×49≈