12.8×99+12.81.25×3.2×2.53.8+4.29+2.71+6.212.5-0.78-3.2212.6×101-12.6 38.5÷2.5÷0.4 0.88××0.016.5×101 4.85×98 1.2×2.5+0.8×2.5 28×17.5-28×7.5 4.8×12.57.68 - 7.68×0.5 5.2＋4.8×3.5 6-4.26+1.7914.92-（3.92+5.53）10.18+9.64+15.8210-(6.29-2.76)5.9-(2.25+2.56)8.47-(2.98+5.47)0.9+9.9+99.9+999.99.8+13.7+10.23.5+13.9+2.5+6.11.25×15×8×46.7×10.1222×4.4+8.9×8886.3+4.82+3.7－0.82307×10.1 0.45×18 132－43.7－56.30. 32×12.5×2.55.6×1.25 7.6×27＋7.6×174－7.67.3＋2.7－7.3＋2.7 （7.7＋15.4）÷7 9.9×341.5×1.2＋8.8×1.5 7.12×4－1.12×4450÷2.5÷2 12.5×8.8（125－1.25）×0.83.5×0.4＋3.5×0.6 39÷（1.3×5）2.2÷4＋0.6÷44.83÷5＋2.17÷5 3.29+0.73+2.273.29-0.73-2.27 7.5+2.5-7.5+2.57.325-(5.325+1.7) 7.325-(5.325-1.7) 3.29+0.73-2.29+2.273.29×0.25×40.125×8.8 0.25×0.280.125×3.2×2.535×40.2 0.25×4÷0.25×43.5×9.9 3.5×99+3.5 3.5×101-3.53.5×9.9+3.5×0.13.5×2.7+35×0.73 3.5×2.7-3.5×0.7 (32+5.6)÷0.83.5÷0.6-0.5÷0.6 4.9÷3.57÷0.25÷47÷0.125 7.35÷(7.35×0.25)7.35÷(7.35÷0.25) 3.07－0.38－1.621.29＋3.7＋2.71＋6.3 8－2.45－1.5523.4－0.8－13.4－7.20.32×403 3.2＋0.36＋4.8＋1.641.23＋3.4－0.23＋6.60.25×36 12.7－（3.7＋0.84）36.54－1.76－4.540.25×0.73×47.6×0.8＋0.2×7.6 0.85×1990.25×8.5×4 1.28×8.6＋0.72×8.612.5×0.96×0.810.4－9.6×0.35 0.8×（4.3×1.25） 3.12＋3.12×99 28.6×101－28.6（4.23＋6.17）×0.8 。