0.12×9×5
59.6×101﹣59.6
52.5÷2.5÷0.4
①×4.5+6.5×80%﹣0.8
②4×0.8×25%×12.5
③[﹣(﹣)]÷
④2022×
①
②36×()
③
④
⑤3.24×0.76+3.24×0.24
⑥