①875-143-357
②8×9×125
③56×67+56×33
④45×102
⑤270÷6÷5
⑥(80-8)×125
⑦125×24
⑧12×25
①25×48×125
②(437+323)÷20×105
③628-257-143+121
④10000-(47+23)×32
⑤73×173-73×73
⑥2310÷[235-160÷(13+27)]
①15.74-4.3-5.7+4.26
②7.6×4.3+0.43×23+0.43
③8.88×1250
④40.9÷0.25
⑤0.25×(4-0.8)×1.25
⑥3.72-0.72×[0.1÷(15.9-15.85)]