① - + -
②3.6÷0.8÷1.25
③ ÷ + ×
④72×( - )
÷[(1+)×]
17×19×()
0.25×12.5×32
12.5×1.6×0.45
36×() 7.5×8.79+87.9×0.25
①4.82﹣5.2÷0.8×0.6
② ÷[ ×( - )]
③78.53﹣(8.53﹣6.94)
④( + - )÷
⑤53.5×5.8+0.42×535
⑥0.72- +2.28-