09 300题一~四年级计算专项训练.docx

算练习 - 数乘整数总题数： 6 ×6.6=9 × 1.7=0.9 ×4=0.1 ×5=3.2 ×7=0.6 ×6=4×0.8=6×0.4=2.7×4=6 ×7.6=7×0.2=9 ×6.4=0.6×2=3 ×0.5=6 ×6.2=1 ×0.9=0.2 ×4=0.5 ×4=5 ×0.6=3 ×0.6=0.4×4=3 ×7.9=6×0.3=2.3 ×3=4.4 ×6=7.6 ×6=5.7×8=6×0.8=1 ×5.2=0.8 ×6=1 ×7.4=9 ×0.1=0.7 ×5=4 × 1.5=0.5 ×5=2.2 ×8=5 ×2.4=9 ×0.5=5 ×9.9=0.6×8=4.9 ×7=0.5 ×7=5 ×0.3=0.9 ×6=9 ×0.7=3 ×0.8=1 ×8.6=9 ×0.6=0.09 ×4=5 ×0.66=50×0.2=0.05 ×8=5.9 × 10=1 ×0.03=1 ×3.05=0.2 ×50=0.9 ×50=0.4×30=70×8.3=60.3 ×7=40 × 1.6=90 ×7.3=8×0.07=0.05 ×2=1.6 ×70=0.06×3=0.02 ×7=8.03 ×3=0.02 ×3=7×0.09=6 ×60.5=3 ×0.45=8.4×80=0.05 × 1=30×2.7=2 ×80.8=0.83 ×6=10×9.9 =0.06 ×7=6×0.02=63 ×0.2=60×0.6=9.01 ×3=40×0.6=70×8.5=0.35 ×3=50.5 ×2=9 ×0.03=0.7×84=6×0.86=6×0.05=20×4.2=0.6×20=90.6 ×6=70.9 × 1=14×0.7 =0.82 ×2=0.08 ×6=19 ×0.5=3 ×0.86=第 1 页 算练习 - 数乘整数总题数： 300题0.09 ×2=3 ×0.07=0.09 ×6=0.2 ×70=20.3 × 1=0.03 ×3=20×4.7=90 ×5.5=0.03 × 1=0.1 ×60=0.4×33=10×0.6 =18×0.8 =60×9.6=2 ×0.03=70×3.1=6×40.2=10×0.4 =10×0.2 =0.2 ×90=0.07 ×5=0.05 ×7=0.04×3=8.6×80=26×0.6=36×0.9=9.8×80=1 ×0.06=50×0.4=9.9 ×70=0.04 ×7=0.8×30=50×0.7=30.6×3=8×0.08=98×0.7=0.7×94=0.8×91=50×0.5=6×5.02=2.4×20=4×0.09=0.05 ×50=0.04 ×70=0.06 × 16=500×0.9 =0.08×50=0.6 ×700=0.41 ×70=0.08 ×70=70×0.08=80×0.07=0.48 ×70=90×0.08=80×40.9=100×0.6=0.51 ×40=0.05 ×42=9.09 ×60=0.05 × 16=0.8 ×640=50 ×70.9=0.74×90=0.06×25=0.2 ×730=400×0.7=0.06 ×60=0.3 ×770=900×0.7=0.03 ×90=0.06×90=90×0.09=610×0.8=0.2 ×820=0.01 ×22=180×0.5=89 ×0.03=90×0.07=50×0.66 =80×40.6=800×0.9=0.04×80=0.4×540=830×0.4=600×0.5=0.02 ×38=20×0.08=0.1 × 100=800×0.4=0.7 × 100=0.8×500=400×0.6=0.9 ×700=8.01 ×60=60×0.23=0.3 ×500=20×0.01=70×0.03=8.09 × 10=570×0.2 =第 2 页 算练习 - 数乘整数总题数： 300题100×0.3=800×0.2=408×0.2=180×0.8=670×0.7=40.7 ×70=50×0.07 =94×0.01=0.6 ×600=0.8×490=39 ×0.01=0.8×800=203 ×0.4=0.08×47=0.04×20=0.01 ×80=14×0.03=0.08 × 13=10.5 × 10=0.07×50=0.92 ×30=90×20.9=500×0.1 =0.8 ×610=0.8 × 100=50×0.05 =0.09 ×61=405 ×0.4=90×0.02=0.36 × 10=0.01 ×58=0.7×430=0.1 ×700=61 ×0.03=0.08×30=30×30.7=0.9 ×900=550×0.4 =0.3 ×808=0.09 ×29=0.5 ×400=408×0.5=840×0.8=60.9 ×80=50×0.38 =90.4×50=0.08×40=0.05 ×700=100×0.78=740×0.03=640×0.06=0.81 ×800=610×0.01=807×0.01=460×0.04=500×0.04=500×0.09=0.02 ×200=590×0.03=103 ×0.01=170×0.01=507×0.03=550×0.02=850×0.02=400×0.94=520×0.02=0.03 ×430=600×0.09=270×0.07=0.07 ×700=0.03 ×200=0.02 ×640=580×0.07=0.06×970=0.03 ×903=0.09 ×980=500×0.08=400×0.05=0.02 ×550=0.14×200=0.08×490=620×0.09=0.06×203=0.04 ×600=0.74×300=380×0.01=200×0.06=270×0.08=0.01 ×808=100×0.74=100×0.86=110×0.05=0.07×400=0.03 × 170=0.08×350=620×0.03=130×0.07=300×0.04=660×0.03=700×0.01=第 3 页 算练习 - 数乘 数总题数： 200题0.7 ×6.4=0.4×0.4=0.1 ×0.9=0.1 ×0.4=9.1 ×0.7=0.1 ×0.1=0.5 ×0.4=4.6×0.6 =1.7×0.8=0.8×0.2=0.7×0.2=8.2 ×0.4=8.3 ×0.9=0.7×0.8=6.1 ×0.6=0.2 ×9.7=0.7×8.1=0.9 ×0.7=0.6×0.6=0.4×0.8=0.2 ×6.9=0.5 ×2.7=0.3 ×0.9=0.2 ×0.1=0.2 ×0.8=0.3 ×5.1=0.9 ×0.2=0.7×0.5=0.8×0.7=0.3 × 1.1=0.6×0.2=0.7×0.9=0.5 ×8.1=0.2 ×0.3=0.1 × 1.3=9.5 ×0.7=0.9 ×0.6=0.3 ×9.5=0.5 ×7.6=0.3 × 1.5=5.7×0.9=3.7×0.3=0.5 ×0.3=0.4×0.9=0.8×0.5=0.3 ×0.5=0.2 × 1.9=0.4×0.2=0.4×0.3=0.5 ×0.5=0.3 ×0.6=2.2 ×0.7=0.4×0.1=0.2 ×0.7=0.1 ×2.5=0.7×0.03=0.9 ×0.37=0.04×2.3=0.07×0.6=0.05 ×0.6=0.07×0.8=0.5 ×4.01=0.09 ×0.3=0.6×40.4=50.7×0.2=0.04×0.2=0.7×0.34=0.02 × 1.2=0.09 ×0.8=0.8×0.05=0.8×0.09=0.4×0.04=0.9 ×0.02=0.06×0.8=8.3 ×0.06=0.3 ×0.05=0.48×0.2=0.9 ×0.55=7.3 ×0.02=0.8×0.47=第 1 页 算练习 - 数乘 数总题数： 200题0.1 ×0.09=0.09 ×0.2=8.9 ×0.03=0.41 ×0.6=1.07×0.8=0.9 ×0.09=0.38×0.6=0.8 ×6.07=0.05 ×7.2=3.5 ×0.05=0.5 ×0.04=0.2 ×0.69=0.03 ×0.8=0.08×0.2=0.07×0.1=0.02 ×8.3=0.4×0.06=2.2 ×0.02=0.1 ×0.26=0.01 ×0.3=0.9 ×0.91=0.5 ×0.65=50.4×0.5=30.2 ×0.2=4.3 ×0.07=0.02 ×0.7=9.7×0.01=0.06×0.3=0.2 ×0.04=7.2 ×0.04=0.08×0.4=0.09 ×0.7=0.8×0.37=0.6×0.02=0.7×0.09=2.4×0.01=0.48×0.5=0.08×0.6=0.06×0.2=0.1 ×0.08=0.08×2.1=0.08×0.5=0.9 ×0.01=0.7×0.05=0.6×0.06=0.04×0.9=50.1 ×0.2=5.1 ×0.03=0.09 ×0.5=7.6×0.07=0.9 ×0.97=0.53 ×0.7=0.3 ×0.08=0.87×0.9=0.08×0.3=90.2 ×0.9=0.5 ×0.03=0.03 × 1.6=0.06 ×6.1=0.1 ×0.33=0.5 ×0.15=0.07×0.9=0.02 ×0.8=0.9 ×0.05=0.08×0.7=0.6×0.99=0.61 ×0.9=4.02 ×0.7=0.73 ×0.3=6.7×0.08=8.7×0.03=0.08×5.6=0.9 ×0.04=0.61 ×0.5=0.4×8.09=0.03 ×0.7=0.82 ×0.8=0.4×8.01=0.1 ×0.01=0.5 ×0.25=第 2 页 算练习 - 数乘 数总题数： 200题0.4×0.02=0.1 ×0.03=0.03 ×0.1=0.7×0.11=0.04×0.8=7.6×0.05=0.01 ×0.7=0.4×0.08=0.7×0.76=30.7×0.05=0.7×0.08=0.8×0.08=7.05 ×0.4=0.01 ×0.5=0.7×0.07=4.3 ×0.05=0.7×0.06=0.6×0.38=0.01 ×40.2=10.6×0.03 =0.9 ×0.03=0.3 ×0.06=0.07×0.4=0.07×9.7=0.72 ×0.9=0.02 ×0.5=0.2 ×0.02=1.1 ×0.04=0.01 ×20.4=20.3 ×0.08=0.05 ×0.5=0.06×0.6=0.07×3.8=0.01 ×6.3=0.36×0.3=0.1 ×0.06=0.2 ×0.06=0.08×0.8=10.1 ×0.04=20.4×0.01=第 3 页4.4×0.31.6 ×7.41.1 ×0.40.8×0.50.1 ×0.62.3 × 1.80.1 ×7.45.7×0.70.4 ×6.21.3 ×0.40.2 ×0.90.7×0.81.2 ×0.41.4×0.86.2 × 1.90.3 ×0.71.2 ×9.41.7×8.20.7×8.50.3 ×0.20.8×2.10.5 × 1.60.6 ×7.62.8 × 1.80.2 ×0.70.4×0.53.6 × 1.60.7 × 1.90.1 ×5.75.2 × 1.40.5 ×2.85.5 ×0.30.6×0.80.95 ×5.81.45 ×8.90.2 ×0.970.99 ×2.94.4 7.4 0.4 0.5 0.1 2.3 7.4 5.7 6.2 0.4 0.9 0.8 0.4 0.8 6.2 0.39.48.2 8.5 0.3 2.1 1.6 7.6 2.8 0.7 0.4 3.6 0.7 5.7 5.2 2.8 5.50.82.1 3.5 0.3 2.9 0.9 0.3 7.5 0.5 5.4 0.1 9.6 0.8 1.7 3.9 7.3 2.35.85.8 8.9 0.22.9 算练习 - 积和因数的 关系总题数： 300题2.1 × 1.23.5 ×0.91.3 ×0.32.9 ×0.51.6×0.90.3 × 1.97.5 × 1.51.1 ×0.55.4 × 1.50.1 × 1.81.9 ×9.60.8 × 1.20.4 × 1.73.9 × 1.21.5 ×7.30.7×2.35.8×0.60.4 8.51.58.5 0.4 × 1.23 0.9 1.63 ×8.5 0.5 1.5 × 1.340.95 ×8.50.92 ×0.90.99 ×0.5第 1 页2.2 ×0.915.9 × 1.920.93 ×3.50.2 ×0.992.7×0.911.86×0.60.98×3.30.92 ×2.29.2 × 1.791.7×0.960.8×0.961.05 ×5.20.95 ×0.10.2 × 1.181.65 ×0.10.92 ×0.30.5 × 1.681.69 ×0.139.1 × 1.91.4×5.141.17×8.50.7×0.962.5 × 1.110.96×0.21.09 ×4.63.3 ×0.931.06×2.50.7 × 1.930.8×0.914.1 × 1.260.93 ×9.50.91 ×4.11.79 ×7.10.97×3.55.3 ×0.961.47×9.50.92 ×3.91.22 ×0.81.2 ×0.970.5 ×4.138.5 0.7 2.5 0.2 4.6 3.3 2.5 0.7 0.8 4.1 9.5 4.1 7.1 3.5 5.3 9.5 3.9 0.8 0.974.137.5 2.2 1.6 1.8 0.6 8.1 0.7 5.6 0.1 0.5 0.2 9.5 4.1 0.9 0.7 0.9 4.2 0.9 1.8813.62.2 5.9 3.5 0.2 2.7 0.6 3.3 2.2 9.2 1.7 0.8 5.2 0.1 0.2 0.1 0.3 0.5 0.1 39.15.14 算练习 - 积和因数的 关系总题数： 300题0.94 ×7.50.93 ×2.21.74 × 1.61.8×0.980.98×0.61.44×8.10.7 × 1.715.6 × 1.510.1 ×0.961.06×0.50.98×0.20.95 ×9.54.1 × 1.240.94×0.91.47×0.70.9 × 1.834.2 × 1.651.52 ×0.91.88×0.613.6×0.8第 2 页6.37 × 1.11.1 ×36.11.7×0.921.1 ×7.631.3 ×6.185.61 × 1.90.11 × 1.70.2 ×5.615.17×0.40.5 ×66.95.43 × 1.816.8 × 1.73.79 × 1.91.1 ×0.140.9 ×89.10.1 ×5.3723.9 × 1.60.79 ×0.78.95 × 1.71.5 ×3.751.4×3.320.98×0.81.4×0.661.2 ×2.630.7×9.420.3 ×32.21.4 ×76.13.74×0.17.31 ×0.50.21 ×0.50.9 ×27.80.4 ×61.10.32 × 1.18.57×0.313.6×0.51.3 ×29.41.9 ×4.9665.5 ×0.246.9 ×0.313.1 ×0.96.37 36.1 0.92 7.63 6.18 5.61 0.11 5.61 5.17 66.9 5.43 16.8 3.79 0.14 89.1 5.37 23.9 0.79 8.953.7573.1 82.2 31.7 2.58 0.35 0.29 55.9 95.5 26.5 2.75 0.39 0.29 7.17 0.42 7.93 78.7 0.56 44.4 6.460.223.32 0.98 0.66 2.63 9.42 32.2 76.1 3.74 7.31 0.21 27.8 61.1 0.32 8.57 13.6 29.4 4.96 65.5 46.913.1 算练习 - 积和因数的 关系总题数： 300题73.1 ×0.71.2 ×82.21.8×31.70.3 ×2.581.1 ×0.350.29 ×0.555.9 ×0.70.3 ×95.526.5 × 1.22.75 ×0.30.39 × 1.60.29 ×0.47.17 × 1.51.1 ×0.421.7 ×7.9378.7 × 1.90.4×0.560.6×44.41.6 ×6.460.22 ×0.5第 3 页0.1 ×56.41.1 ×87.245.4 × 1.30.67 × 1.51.4 ×7.440.79 ×0.21.6 × 1.131.8×0.311.81 × 1.81.14×3.4593.5 ×0.9229.9 ×0.961.18 ×55.797.1 × 1.081.01 ×0.441.24×95.30.97×0.521.83 ×0.951.91 × 18.90.66×0.9671.9 ×0.51.6×0.5924.7 × 1.10.6 ×7.470.8 ×75.988.6×0.876.5 × 1.10.8×8.9699.3 × 1.90.85 × 1.820.91 ×0.140.13 × 1.360.92 ×7.1273.4×0.971.63 × 1.310.91 ×7.961.52 ×0.992.22 × 1.1838.3 × 1.920.94 ×7.867.49 0.67 0.31 32.6 0.27 9.42 48.7 1.55 61.42.1671.90.5924.77.4775.988.676.58.9699.3 0.85 0.14 0.13 7.12 73.4 1.31 7.96 0.99 2.22 38.37.8656.487.245.40.677.440.791.130.311.81 3.45 93.5 29.9 55.7 97.1 0.44 95.3 0.52 1.83 18.90.665.870.8425.75.2561.28.3786.20.790.3127.3 算练习 - 积和因数的 关系总题数： 300题1.5 ×7.490.67×0.71.3 ×0.311.4×32.60.4×0.279.42 × 1.51.5 ×48.71.4 × 1.551.4 ×61.42.16×0.11.66 ×5.870.84 × 1.9525.7×0.995.25 × 1.881.75 ×61.28.37 × 1.0186.2 × 1.410.79 × 1.870.31 ×0.9627.3 ×0.95第 4 页8.7997.40.590.528.240.4959.20.930.1381.732.137.863.27.557.650.910.960.710.3751.84.9637.65.6429.30.489.527.7623.913.70.260.5725.32.2332.74.348.490.615.920.350.140.95 0.98 0.25 3.87 11.2 0.96 1.57 0.92 0.92 2.71 73.9 0.94 16.1 0.97 0.97 0.28 1.52 1.54 0.4211.18.79 ×0.991.62 ×97.4 0.59 ×0.94 0.52 ×0.988.24 ×0.93 0.92 ×0.491.67 × 59.21.66 ×0.93 0.13 ×0.931.66 ×81.732.1 × 1.7937.8 × 1.9463.2 × 0.94 0.95 × 7.551.15 × 7.65 0.92 ×0.91 0.95 ×0.96 0.71 ×0.921.28 ×0.37 0.96 × 51.831.7 4.75 0.97 0.96 0.91 45.3 55.5 2.89 8.85 0.99 0.94 0.38 1.38 1.34 54.4 0.97 7.67 0.92 0.911.464.96 ×0.96 0.91 ×37.6 0.91 ×5.641.91 ×29.3 0.48 ×0.969.52 × 1.567.76 ×0.931.27 ×23.913.7 × 1.22 0.94 ×0.261.13 ×0.5725.3 ×0.97 0.92 ×2.2332.7 ×0.991.76 ×4.348.49 × 1.39 0.99 ×0.615.92 × 1.651.11 ×0.35 0.99 ×0.14× × × × × × × × × × × × × × × × × × ×× 算练习 - 积和因数的 关系总题数： 300题31.74.750.253.8711.245.355.52.898.852.7173.90.3816.10.9754.40.287.670.920.4211.1第 5 页 算练习 - 数乘法的运算定律总题数： 200题101 ×0.44=101 ×0.39=101 ×0.45=101 ×0.62=101 ×0.98=101 ×0.68=101 ×0.48=101 ×0.61=101 ×0.34=101 ×0.28=101 ×0.41=101 ×0.83=101 ×0.17=2 ×5.2 ×0.5=0.2 ×4.8 ×5=2.5 ×5.9 ×4=0.5 ×9.3 ×2=2.5 ×0.5 ×2=9.9 ×2 ×0.5=5.3 ×5 ×0.2=5 ×9.7×0.2=6.3 ×0.5 ×2=2.8×2.5 ×4=0.2 ×6.5 ×5=2.5 ×7.5 ×4=5 ×3.4×0.2=0.5 ×7.9 ×2=3.4×0.2 ×5=0.5 ×5.4×2=0.2 ×2.2 ×5=9.4×2 ×0.5=4.8×2 ×0.5=5.1 ×0.2 ×5=3.2 ×2.5 ×4=5 ×4.4×0.2=3.5 ×5 ×0.2=1.5 ×0.2 ×5=5 ×2.5 ×0.2=6.1 ×2 ×0.5=2 ×8.6×0.5=6.6×0.2 ×5=5 ×6.2 ×0.2=1.5 ×2.5 ×4=0.2 × 1.5 ×5=0.5 × 1.8×2=8.1 ×8 × 1.25=0.25 ×9.4×4=5.6×8 × 1.25=7.4×0.25 ×4 =6.2 ×0.25 ×4=12.5 ×7.9 ×8=5.5 ×0.25 ×4=9.4×0.25 ×4=12.5 × 1.4×8=8×5.9 × 12.5=6.6 × 1.25 ×8=4.5 ×0.25 ×4=25 ×3.3 ×0.4=5.9 × 12.5 ×8=6.9 ×25 ×0.4=第 1 页 算练习 - 数乘法的运算定律总题数： 200题25 ×5.9 ×0.4=25 ×2.6×0.4=9.7×0.25 ×4=9.5 ×0.25 ×4=1.25 ×7.5 ×8=8×2.9 × 1.25=25 × 1.2 ×0.4=2.3 ×8 × 1.25=8 × 1.4 × 12.5=8×2.1 × 12.5=8.8×25 ×0.4=0.25 ×6.7×4=2.2 × 1.25 ×8=8 ×6.1 × 12.5=4.9 ×2.5 ×0.4=5.1 ×2.5 ×0.4=3.4×2.5 ×0.4=1.6×2.5 ×0.4=2.5 ×7.7×0.4=2.9 ×2.5 ×0.4=2.5 ×8.4×0.4=2.7×2.5 ×0.4=4.3 ×0.125 ×8=125 ×4.6×0.8=8×2.4×0.125=8.3 ×0.125 ×8=4.5 ×0.125 ×8=2.5 ×0.8 × 125=6.3 ×0.8 × 125=125 ×5.3 ×0.8=3.1 ×0.125 ×8=125 × 1.8×0.8=0.8 × 1.9 × 125=125 ×6.9 ×0.8=2.3 ×0.125 ×8=125 ×3.4×0.8=7.2 ×8×0.125=2.7×0.125 ×8=8.2 ×0.8 × 125=2 ×0.6+8×0.6=7.2 ×7+0.8 ×7=3.5 ×2+4.5 ×2=4.1 ×6+5.9 ×6=6 ×7.3+4 ×7.3=6 ×6.5+4 ×6.5=0.7 ×5+2.3 ×5=2 ×3.1+8×3.1=1 ×7.9+9 ×7.9=6×9.4+4×9.4 =1.25 ×9.8×0.8=12.5 ×7.8×0.8=1.25 ×4.2 ×0.8=0.8×8.6 × 12.5=5.3 × 1.25 ×0.8=5.6×0.8 × 1.25=9.5 × 12.5 ×0.8=1.25 ×8.5 ×0.8=2.5 ×0.8 × 1.25=12.5 ×6.7×0.8=0.8 ×6.9 × 1.25=第 2 页 算练习 - 数乘法的运算定律总题数： 200题9.1 ×0.8 × 12.5=4.3 × 12.5 ×0.8=1.25 × 1.8×0.8=125 ×3.2 ×0.08=0.08×9.9 × 125=5 ×0.4+95 ×0.4=92 ×7.1+8 ×7.1=98×5.4+2 ×5.4=92 ×7.5+8 ×7.5=7 × 1.8+93 × 1.8=8 × 1.1+92 × 1.1=99 ×3.8+1 ×3.8=12.5 × 1.1 ×0.08=6.1 × 12.5 ×0.08=12.5 ×5.6×0.08=0.5 ×0.4+9.5 ×0.4=1 ×7.86+99 ×7.86=91 ×8.27+9 ×8.27=91 ×9.75+9 ×9.75=8.1 ×7.8+1.9 ×7.8=1.25 ×9.2 ×0.8=0.8×2.6 × 12.5=6.7 × 12.5 ×0.8=1.2 × 125 ×0.08=8.6 × 125 ×0.08=9 ×3.7+91 ×3.7=3 ×4.4+97×4.4=9 ×6.7+91 ×6.7=7×9.8+93 ×9.8=94 × 1.5+6 × 1.5=94 ×6.2+6 ×6.2=91 ×8.7+9 ×8.7=12.5 ×9.6×0.08=0.08 × 1.6 × 12.5=2 ×9.47+98×9.47=96 ×7.57+4 ×7.57=93 ×8.31+7×8.31=95 ×3.95+5 ×3.95=99 ×3.47+1 ×3.47=3 × 1.95+97 × 1.95=0.8×4.4 × 12.5=4.9 × 12.5 ×0.8=125 ×7.9 ×0.08=125 ×7.8×0.08=7.7 × 125 ×0.08=95 ×0.4+5 ×0.4=9 ×0.9+91 ×0.9=95 ×7.1+5 ×7.1=4 ×6.1+96 ×6.1=8×8.5+92 ×8.5=95 ×8.2+5 ×8.2=8.7×0.08 × 12.5=0.08 ×6.6 × 12.5=3.7×0.08 × 12.5=0.8×2.4+0.2 ×2.4=97×8.49+3 ×8.49=7.4 × 1.4+2.6 × 1.4=0.4 ×6.5+0.6 ×6.5=4.3 ×0.2+5.7×0.2=1 ×0.13+99 ×0.13=第 3 页 算练习 - 数乘法的运算定律总题数： 200题96×8.82+4×8.82=9.4×9.7+0.6×9.7=0.5 ×7.6+0.5 ×7.6=0.8×8.8+0.2 ×8.8=96×0.97+4×0.97=9.4 ×7.8+0.6 ×7.8=98×4.22+2 ×4.22=0.1 ×5.3+0.9 ×5.3=93 ×4.59+7×4.59=6.7×5.4+3.3 ×5.4=99 ×7.44+1 ×7.44=0.7×9.1+0.3 ×9.1=9.8 × 1.5+0.2 × 1.5=7×0.21+93 ×0.21=4.3 ×8.2+5.7×8.2= 0.7 ×5.5+0.3 ×5.5= 0.7 ×7.7+0.3 ×7.7= 6 ×2.48+94×2.48= 0.1 ×2.4+0.9 ×2.4=5.5 ×2.2+4.5 ×2.2=