30.8÷[14－(9.85＋1.07)][60－(9.5＋28.9)]÷0.182.881÷0.43－0.24×3.520×[(2.44－1.8)÷0.4＋0.15]28-(3.41.25×2.4)2.55×7.12.45×7.1777×91111×30.8×〔15.5-(3.215.79)〕（31.83.2×4）÷531.5×4÷(63)0.64×25×7.82.22÷2.52.5÷2194－64.8÷1.8×0.936.72÷4.25×9.95180－705×624÷2.4－2.5×0.8(41212389)÷7671×15-974469×121492405×(3213-3189)3.416÷（0.016×35）0.8×[(10－6.76)÷1.2]19.4×6.1×2.35.67×0.2-0.6218.1×0.923.930.0430.240.8750.4×0.7×0.250.75×102100-56.230.785.43614.07×0.869.12.5没了,如还嫌不够,http://www.shuxue.com.cn/还有很多