0.34+9.76-10.342.25×4.8+77.5×0.484.8×7.8+78×0.521.3×11.6-1.6×1.3227×(15×2728)×2154.36×12.5×82.5×32×1.251.25÷×0.89.6÷3.2÷315.2÷0.25÷489×89÷89×8912.06+5.07+2.94146.5-(23+46.5)12.89-(3.89-1.6)73.8-1.64-13.8-5.3615.75+3.59-0.59+14.255.48-(9.4-0.52)4X-3×9=295X-3×=4X-6×=20.36×5-34X=35X-0.8X=16+623(X-4.5)=7X÷=122(X-2.6)=825X-13X=3104+0.7X=102X×(16+38)=1312X-0.375X=20X–8.5=1.512X-25%X=10二、简便运算。(712-15)×6036×34350.65×10135×99+35(1.25-0.125)×82538×8710×101-71027.5×3.7-7.5×3.7(12+)×713×10.22.6×99710×101-71047×613+37×6130.92×1.41+0.92×8.592.25×4.8+77.5×0.484.8×7.8+78×0.521.3×11.6-1.6×1.3227×(15×2728)×2154.36×12.5×82.5×32×1.251.25÷×0.89.6÷3.2÷315.2÷0.25÷489×89÷89×89×3÷×3146.5-(23+46.5)12.89-(3.89-1.6)73.8-1.64-13.8-5.3615.75+3.59-0.59+14.25125×36×2531/30×315.48-(9.4-0.52)12.06+5.07+2.9430.34+9.76-10.34