①÷÷
②÷8+×+
③(+-)÷
④(×16+4)÷
①#(-)÷
②# 8.8-6.75+9.2-0.25
③÷(-)×
④÷[(-)×)]
①101×32
②2.74+8.67+7.26+11.33
③18.8﹣5.8﹣﹣4.2﹣
④×+÷
⑤0.888×125×73+999×3
⑥4﹣[3.75×(1.2﹣)+]
①273﹣73﹣27
②1.25×9.78×80
③()×24
④[1﹣()]÷
①
②
③
④