①3.25×3.6+7.75×3.6﹣3.6
②9.9×25
③
④
① ÷ + ×
②7.85﹣(4.3+0.85)
③ ÷9× ÷
④ ÷[( - )÷ ]
⑤(3- - )×
⑥120×( + - )
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-
①3.86+6.4+2.14+7.6
②5.2÷0.32﹣0.12
③()×15
⑤
⑥