①5.6+12.85-9.76
②16-8.49+5.19
③14.68-0.56-6.44
④14.68-9.68+7.4
⑤14.68-(9.68-7.4)
⑥2.43+3.34+6.66+2.57
①1700÷25÷4
②273- (273-168)
③241×48-48×116
④19.3+8.26+5.74
⑤15.6-4.13+3.87
⑥810÷[81÷(56-29)]
①12.5×(8+0.8)
②+×
③+÷
④26﹣7.28﹣12.72
⑤5.8×4.1+5.9×5.8
⑥÷(+1.4×)