26.8-320%-6.8-680%
①625÷1.25
②85.6﹣2.57﹣32.43+4.4
③1.25×(2.6+5.4)
④(113.6﹣4.17)÷2.5÷0.4
⑤5.7×9.2+14.3×(12.1﹣2.9)
⑥[(17﹣4.5)×0.2+7.5]×0.31
①[(91-64)÷3]×60
②6800÷25÷4
③52×101-52
④25×44
⑤64×64+64×36
⑥2.7+5.09+7.3+4.91
①5.12+ +3.88+
②
③
④
⑤
⑥
①13.7+2.98+1.02+2.3
②9.6+3.85-7.23
③5.67-1.8-3.67
④1200÷25÷4
⑤54×54+46×54
⑥750÷[87-(27+10)]
①6.8+4.7+3.2+5.3
②(100+1)×73
③8400÷25÷4
④3.9+4.56-3.9+5.44
⑤98×26+2×26
⑥125×18×8
①44×25
②199×62+62
③3600÷[(80-65)×4]
④5.75+4.62-2.75+3.38
⑤15.32-7.59+68.4
⑥79+21×9-45
①326+299
②125×88
③15.73-(2.17+0.73)-1.83
④32×99+32
⑤34.23-7.85-2.15
⑥77×101