①60+630÷18
②
③
④1.25×6.4×0.25
⑤
⑥
25×26﹣356 320÷80+3.6×1.5 28×(+-) ÷[×(-)]
⑴;
⑵
⑶;
⑷
7.28﹣(1.28+0.25) ÷[×(0.5+)]
23× 3.7×+1.3÷
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
④