小數乘除法過關小數乘除法專項能力過關練習題一、用豎式計算下列各題（除不盡的保留三位小數）3.4584 4.625 0.4156 1.085305 0.07624 2.35.5 8.630.42 8.630.420.382.6 1.241.5 3.21.8 0.320.9 0.382.6 2140.37 2.625 1.0630 0.15615 = 240.9= 7200.58= 3021.7= 31.524.5 0.80.56 4.230.028 0.631.05 34.30.23 360.56 0.320.2 6.7283.2 2.3584= 280.63= 0.0940.12= 3.047.5= 0.1253.2= 0.459 2.0625 0.56123 240.37 160.285 1.0630 0.15615 240.9 7200.58 0.4845 6.3221 0.07789 183.9 2.080.09 4.250.16 7.344.5 0.240.25 4.30.015 0.0670.53 0.560.045 270.43= 1.0845= 283.24= 37.56= 1.5624= 5436= 3.6525= 24.3612= 5400.72= 0.125280= 642.75= 0.03915= 1.3518= 0.13515= 16245= 68.1734= 1700.35= 363.75= 840.69= 15.4575= 60.915= 0.73203= 2.8547=5.980.23 19.765.2 1311 16245二、脫式計算（能簡算的要簡算）0.1250.25847.40.28+0.282.6 4.80.9+0.48（40.4）2.5 2.5 （ 0.77 0.4） 6.13.63.93.6（4+0.4）2.5870.125 102.31.2 3.99.9+0.394.51.22.3 （0.4+1.25）0.89.46.12.3 3.254.767.8 18.10.923.931.51.34 2.73.12.93.2 1.22.50.82.5 0.78101 250.256 68.04（0.213.6）0.4860.013.99 19.752.5-3.55 1.251140.817.52.3-7.52.3 90254 8.935.78.933.38.93小學五年級數學上期計算練習題集2.5412= 0.90.8= 7.5x-3x= a+3a+7a=1.05100= 10.5= 0.963= 1.470.7=5.46= 1280.4= 780.6= 9.63.2=650.05= 540.12= 320.4= 360.18=420.003= 780.06= 450.005= 810.03=7.20.002= 10001.25= 102.5= 1200.024=7.55= 8.60.002= 0.00363.6= 2.50.005= 0.360.0006= 6.321= 8.60.0043= 460.0023= 9.80.7= 4.60.023= 0.0090.005= 390.0003=133.0007= 5.050.5= 1230001.23= 0.0012550=5.6700= 7600.008= 4.3296= 4920.004=18.630.03= 9.599= 13.50.98= 0.1-0.047=0.292.9= 3.40.2= 0.5719= 63+124+76=7.0910.8= 0.87.09= 9.5101= 3.810.1=7.69101= 3.810.1= 0.12572= 719+7=22.83= 5.980.23= 19.765.2= 3.817=3242= 246.413= 2.170.7= 0.40.01=5.3+6.7= 5.4-3.6-1.4= 300.01= 151.5=12.9-8.5= 7.20.4= 2.81.4= 8+2-8+2=286+198= 314-202= 526+301= 223-99=0.452.5 0.81.25 0.33.6 0.30.3100.07 0.31.4 0.057 0.920.40.20.26 0.144 0.020.1 1.20.3=2.50.4 2.45 0.224 3.250.5=(180+20)5= 1.7+0.43+3.3= 75254=2502505= 70+5050+70= 13.7+0.98+0.02+4.3=18.63.470.53= 7210172= 235283528=2.678+787.4= 7.26-(5.26-1.5)= 8(2.50.25)1.250.80.5 （1.50.25)4 0.120.50.167.2899+7.28= 4.3500.2= 543618 =10245-328= 1001903618= 3.85.25+14.5=300-426321= 0.810.25+5.96= 4031327=(25+4)4= （1.2+ 1.8)4.5= 102576832=645-4512= 10-2.87-7.13= 0.96+9.69.9=40119+284= 640+12845= 1.2581.25=5.370+4.63= 2.57.14= 16.129916.12=5.0-0.90.9= 7.2899+7.28= 4.3500.2=642.640.5= 3.94+34.30.2= 8.91.14.7=2.75.43.9= 3.69.85-5.46= 8.053.4+7.6=6.584.50.9= 2.80.5+1.58= 324.90.9=4.84.80.5= (1.250.125)8= 4.8100.1=56.59956.5= 4.85+0.351.4= 0.873.16+4.64=40.50.810.18= 4.8(15 2.4)= 2.1308257=6.81+6.8199= 0.2518540= 2.5(3.80.04)=0.2539+0.25= (85.27)1.25= 6.81+6.8199=0.2518540= 6.80.750.5= 3.750.1252.75=1.53+23.47.2= 1.2+3.2+0.8 = 1.22.54 =3.01+1.7+0.99 = 10.666 = 2.7-2.72.7=5.4(0.510.17)= 0.7899+0.78= 5.4(7.266.05)=8.717.4-8.77.4= 12.50.42.58=0.68（5.2-3.5)1.25= (0.25+2.5+25)0.4=5-0.90.2+1.80.5= 6.43.28+4.63.28-3.28=12.2721(7.36.6)2.4= 4.40.83.40.8=(9.37+9.37+9.37+9.37)2.5= 2.376.3+2.373.7=460.33+540.33= 1.93+2.7+2.07+7.3=2615.715.724= (2.275 0.625)0.28=85.07(15.34.8)+5.369= 40（3.52.75+0.86）=3725+26867= （32+36045）72=（75903314）54= 412（6073614）=10.5(5.2-3.5)= （13.88.7）0.034=6.25+3.85-2.125+3.875= 3.375+5.75+2.25+6.625=2.14.3+5.72.1= 3.3750.97+0.976.625=6.54+2.4+3.46+0.6= 95.61.8+95.68.2=1.54.20.750.25= 3.274 +3.275.7=0.25800.450.9= 2.4+2.4(5.375-3.375)=7.5-5.713= 12.37-3.25-6.75=166.8+2.216+16= 58.7-16.653.7=0.44.72.5+(2.3+5.3)= 9.31-1.125-7.875=400(0.62+0.08)= 1.2(9.62.4)4.8=（8.583.69）（3.41.8）= 1.5（10.0315.67.5）=30.6（4.50.16）= 4.7+3.91(32-29.7)=3.12（0.90.70.1）= 9.2+9.7283.21.5=2.40.751.252.5= （20.20.62.12）0.1=(1.50.9+3.65)2.5= 8.480.80.9=1010.36（14.40.05）= (25.3-9.7)0.38.5=10.5(5.14.4)+18.25= 4.110.72(3.382.13）=102511254.53.6= （6.85.4）2.750.9=0.87536+4.058.1= （227254.68）0.5=630（2.986.50.08）= (21.88+29.8) 7.6=(8.15.4)3.685.7= (3.44+20.50.32)0.16=0.54(8.745.3)28.4= 0.11+10.80.1=（1.256.4）14.882.4= (4.32.012.2)4=58.8（0.60.7）0.02= 10.47.79（0.350.6）=3.6（1.20.5）5= 13.70.253.74=3.61.25+ 0.320.4= 0.8(3.22.992.3)=2.5(69.7283.2)= 5.2(4.60.920.04)=5.4(3.940.86)0.8= 19.281.820.7=10.563.753.750.56= (1.5 0.81)0.4=（37.62+20.76）0.042= （17.2-4.53.6）0.32=(6.02 + 2.8 )0.4 - 2.05= 3.27（80.5-9.840.16）=(71.271.20.9)0.25= 1.08（3.94+34.30.2）=（4.25-4.250.8）1.7= 1.465+12.80.47.5=1.521.655.7= 3.8（24250.6）=(0.25 +0.125）（0.750.4)= 202.548=(4.84.80.5)2= 0.8（10.40.64）0.92=(25.3-9.7)0.37.6= （4.5+1.36）1.5=58.8（0.60.7）0.02= 0.4(3.2-0.8)1.2=16.78-1.61.50.8= (53.73-17.49)(2.6+12.4)=18.644.35220.9= 808.2（107.6）=(98.5)(54.76)0.1= 1.68.41.50.18=（1.1-0.78）（2.7-1.95）= （20.20.62.80.4=0.06(10.140.64)2= 17.685.2+2.71.5=19.8+(3.749-0.299)2.3= 8.6+15.40.41.4=1.51.20.62.4= 0.6（6.252.50.25）=4.3215125.10.85= 5.6(12.58.5 0.85)=8.74 - 8.7423+7000.03= 0.38+9.623.75.4=4.38（36.94+34.30.2）= （5.84-3.9）0.4+0.15=1.6(2.25+27.751.5)= 2.021.0270.26）=6.5(10-3.7)+2.98= 4.75+8.4(9.2-6