①26.3+9.1÷(5.4-4.7)
②47.6-22.5÷2.5×1.3
③4.8÷[(46-16)÷7.5]
④0.85×0.25+0.85×0.75
⑤6.81-(6.82×0.5-0.5)
⑥34×[1.5÷(1.2+4.8)]