0.25×1.25÷ 8.5×80%+1.5÷
( + )×17×21 2022 ×
35÷×30% 0.6×70+120×37.5%
101×57%-57%
① []
②4.6+7.68﹣1+2.32
③1.25×2.5×0.4×8
④9.5×20%+