①1.25×0.4×2.5×8
②9.9×101
③4.2×2.4+7.6×4.2
④46.8-7.9-8.1
① []
②4.6+7.68﹣1+2.32
③1.25×2.5×0.4×8
④9.5×20%+
①×4.5+6.5×80%﹣0.8
②4×0.8×25%×12.5
③[﹣(﹣)]÷
④2022×