1、人教版小学数学五年级上册口算心算天天练 全册人教版五年级(上)口算心算天天练(每天20分钟)学校 姓名 小数乘整数(一)一、直接写得数。52= 254 = 1258 =0.52 = 0.254 = 1.258 = 3610 = 2440 = 7520 =0.3610 = 0.2440 = 7.520 =5200 = 12580 = 2910 = 0.5200 = 0.12580 = 0.2910 = 2.52= 0.510= 0.68= 2.12= 2.810= 0.0420= 5.6+0.4= 4.7+2.3= 4.52= 6.92.5= 7.28= 0.620.32= 二、列竖式计算。2.
2、748 = 1.365 =4.1815 = 0.3835 = 小数乘整数(二)一、直接写得数。5.6100= 0.1258= 0.79=0.811= 7.2+12.8= 46.73.8=12.8+4= 0.213= 2.55=1.64+4.1= 8.6510= 0.356=3.081= 4.951000= 690.1=0.45= 0.325100= 2.58=0.1254= 3.280= 7.21=0.2540= 1.258= 50.24=4.50.05= 50.12= 240.5=4.85= 2.84.2= 4.52=二、列竖式计算。 7.452 20.56 0.6415 5.524 小数乘
3、小数(一)一、直接写得数。57= 128= 254=0.57= 1.28= 2.54=0.50.7= 1.20.8= 2.50.4=4.50.02= 0.70.8= 0.0420= 5.50.2= 7.20.8= 1.40.5= 0.020.5= 0.70.9= 3.080.01=0.81.1= 0.350.6= 7.42.8= 6.90.1= 0.40.5= 70.6=3.280.1= 7.20.1= 0.010.1=0.250.4= 1.250.8= 2.40.5= 二、列竖式计算。6.244.5 0.290.340.3214.2 9. 650.48小数乘小数(二)一、直接写得数。10.5
4、0.4= 7.32.7= 80.125= 0.610.39= 109.4= 5.20.4=0.80.11= 7.212.8= 2.3100=4.13.7= 2.516= 165.07= 0.020.5= 7.20.8= 1.40.5= 17.532.5= 1.020.2= 5.020.3=1.26= 0.260.3= 8.40.02= 0.80.05= 0.80.13= 0.340.2=8.08+0.92= 0.52.2= 0.30.5=1.254= 3.270.63= 15.80= 二、列竖式计算。2454.5 32.61.90.280.15 680.44小数乘小数(三)一、直接写得数。0.
5、80.5= 5.50.3= 0.60.11=5.55.5= 0.542.2= 3.50.05=20.02= 0.2540= 1.20.3 = 1.50.6= 73.50.1= 0.610.39= 46.552.5= 0.450.2= 1.258=2.64-1.54= 2.12= 2.52=0.81.25= 0.425= 0.68= 2.5101= 0.023.5= 3.30.3=5.61= 23.50.1= 1.50.6= 2.00.9= 1.50.4= 1.80.5=二、判断积是几位小数。0.250.09 ( ) 2.0031.5 ( )1.030.4 ( ) 1.0244.28 ( )3.
6、280.005( ) 2.51.4 ( ) 0.689 ( ) 2.615 ( )32.650 ( ) 0.390.7 ( )三、比大小1.211.3 1.21 5.70.95.7 3.274.5 3.270.5 14.4 04.49.60.85 0.859.6 240.65 24 积的近似数一、直接写得数。600.5= 32200= 0.126= 1.75.8= 54.45= 0.20.4=9.8-6.8= 6.899.81= 1.70.4=2.83.5= 1.056= 160.5= 0.125= 15.52.5= 400.0.9= 0.52.5= 90.2= 0.90.3=0.16= 2.
7、10.7= 0.60.15= 200.05= 1.20.3= 0.30.9= 6.2+3.8= 5.53= 90.05=0.332= 9.60.4= 0.80.8= 二、算一算(按要求保留积的小数位数)。保留一位小数: 6.32.8 1.2912.5保留两位小数 : 0.982.45 7.360.54连乘、乘加、乘减一、直接写得数3.41.42= 0.7+0.8460.6+3.4= 4.80.52= 71.17.2= 0.05450.62+0.322= 8.6510-6.5= 2.824.4= 5.20.40.5= 2.190.912= 440.31.40.5+0.5= 350.60.6= 1
8、009.410= ( 4.8+1.2)1.5= 3.250.1170 12.53780.70.6100= (0.680.42)0.5=二、脱式计算。6.41.62.5 10.693.52.612.40.61.3 0.818.512.6整数乘法运算定律推广到小数(一)一、乘法交换律与结合律的运用。4.560.42.5 12.52.70.8 12.5320.25 2.53212.556 250.36二、乘法分配律的运用。1.0891.08 12.58.8 990.35 3.71.82.71.895.70.286.30.280.282 整数乘法运算定律推广到小数(二)1.257.78 2.5(104
9、)6.15.43.95.4 1310.14.2631374.2 5.59.812.52.50.84 7.897.87.20.32.80.3 321.254.26.513.494.2 51.030.2 4521502.1 0.4599 整数乘法运算定律推广到小数(三) 0.258.54= 0.2516.241.252.532 3.20.2512.5 0.25360. 250.73412.50.960.8 4.3612.58 (1.250.125)8 4.810.13.723.56.283.5 3 .61027.0910.80.87.09 0.39199 整数乘法运算定律推广到小数(四)0.324
10、03 1.879.90.1872.316+2.383+2.3 7.60.80.27.63.6510.1= 15.62.115.61.1 0.859.9 4.87.8780.52 56.59956.5 4.2994.2 9.7999.7 27.53.77.53.7 8.91.01 3.140.6831.40.032 整数乘法运算定律推广到小数(五)7.20.27.41.8 2.53.90.4 1.288.60.728.6 0.651013.92.73.97.3 6.63.3+6.66.7 12.79.91.27 1.4324+1.572410.60.359.60.35 1010.87-0.918
11、7 3.654.7 36.50.37 10.716.1-15.110.7 7.74(2.81.3)1.52.26 5.411-5.4 小数除以整数(一)一、直接写得数。567 444 3635.67 4.44 3.630.567 0.444 0.3635.22 1.53 1.20.43.63 2.73 0.123 0.459 3.66 2.72 1.23 0.454 2.55 8.47 0.3417 30.448.414 0.726 2.613 1.26 03.65 0.488 二、列竖式计算。4.9511 3.017 0.64619 280.824 小数除以整数(二)一、直接写得数。23.6
12、10= 104= 36= 0.363= 8.42= 0.0540= 4050= 5.7+13= 6.633 = 0.173 70.08 2.441.68 600.5 6.48=0.9632= 5.213= 06= 3.612= 7.30.3= 5.67= 4.85.2 7.2 72= 3.913= 7.2+12.8= 3.612= 0.735= 12.84= 25= 0.484= 二、列竖式计算。24.57 10.44 5.6 16 78.39 14.714 81.525小数除以整数(三)一、直接写得数。 0.78 2.12= 5.213= 0.250.4= 4.55= 12.525= 12.
13、63= 0.36= 3.50.2=10.32 12.55= 1.68= 8.084= 1020= 3.24= 0.22102= 0.546= 0.2540= 0.137 6.92.5= 50.12= 9.68= 0.610.39= 0.5628= 12.255= 6.39 0.9630.3216 2.510 6.321二、列竖式计算并验算。65.616 46.824 5.427 43.529 1.8252 85.822 一个数除以小数(一)一、直接写得数。 6611 = 164 15036.61.1 = 1.60.4 1.50.312.50.5= 70.25 0.924 0.764 82.5
14、0.750.25801.6 1.20.3 2.564 161.6 60.5 = 4.20.76= 0.270.3= 06.81 3503.5=2.510 3.93.9 0.30.1520.5614 0.480.03 360.54= 0.5117 73.5= 8(2.50.25)二、在( )里填上适当的数。0.420.7( )7 0.380.19( )19 0.2170. 5( )5 21.281.4( )14 5.1751. 5( )15 2.340.21( )21三、不计算,直接写出下列各式的积是几位数。3.50.7 ( ) 4.90.05 ( ) 51.7 ( ) 4.250.27 ( )
15、450.09 ( ) 17.020.3 ( )四、把下列各题改成除数是整数的除法。360.36( )( ) 0.090.3( )( )146.40.024( )( ) 一个数除以小数(二)一、直接写得数。 752.5= 8.44.2 0.48625=0.050.8 0.48 (1.33.5)0.6 5.6100= 0.9310 1.60.4801.6 4.80.5 97.60.02= 122.5 3.21.6 250.80.57.80.01= 50.25 3.80.5 5.40.6= 5.21.3 19.60.23.25= 0.6416 0.470.25 8.40.4 1.94 1.60.8=
16、 0.5252= 3.20.4 0.281.4二、列竖式计算。10.80.6 1026.8 15.6 0.6 78.30.9 14.70.14 37.82.8商的近似数(一)一、直接写得数。7.50.15= 1-0.8= 5400600=9.7-7= 5.8+5= 0.2070.001= 7.610= 7.8+2.2= 24.900.6=65.8100= 7.06100= 1-0.37=0.819= 91.510= 0.9-0.3=18.1= 70-24= 30015=0.35+0.43= 565.6= 14.2+1.7=0.5100= 2.8-1.2= 1.258=0.011 60.025
17、03.50.20.4= 65= 2.951.95 二、列竖式计算。1、精确到十分位 4.870.3 239.6232、精确到百分位 45.20.6 3.950.76商的近似数(二)一、直接写得数。12.60.3= 4.480.4= 1.60.8=00.20.1= 3.50.35= 0.840.7=0.755= 1.258= 1.890.03=0.11= 1.12= 0.245= 750.25= 100.5= 0.364=3.12 10= 14.40.72= 60.4=1.20.3= 0.2 0.4= 2.54=7.21.8= 1000.8= 0.10.10.1= 4.23 4.85.2 0.5
18、0.4 6.44 1.50.3 3.90.39 二、一箱啤酒24瓶。60瓶啤酒需要几个箱子?三、做一个木箱需要木料6.2平方米。25.6平方米木料能做多少个木箱子?循 环 小 数一、直接写得数。8.47 0.3417 2.50.58.40.7 0.340.17 30.44 1.26 0.720.6 2.61.30.60.3 03.65 7.821 1.40.7 3.60.06 5.60.9 0.480.8 4.40.11 4.23 0.30.01 40.5 5.10.17 0.90.45 9.616 10.01 34 8.19 2.54 3.66.3 0.054 3.50 10.08 3.50
19、.01 1.250.25 3.90.39 4.85.2 0.50.4 6.44 1.50.3 4.23二、排排座。 0.60 0.608 0.6 ( )( )( )( )三、在“”里填上“”“”或“=”。0.3 0. 13 0. 76 1. 8.0 8. 0. 0.202 16 17 用计算器探索规律一、直接写得数。0.112= 0.40.04= 4.2100=1.2538= 3-0.27= 0.5500=5.2+4.6= 11.43-.043= 1.20.05=10.125= 1-0.4= 0.5200=4.20.01= 0.754= 80.41.25=0.51.1= 0.810.9= 2.
20、50.6=120.3= 0.470.25= 8.6-2.5=1.258= 1.233= 0.70.07=3.90.39 4.85.2 0.50.4 6.44 1.650.3 4.23 二、用计算器计算下面各题(得数保留两位小数)。79.63.5 = 15.92.1 = 6.60.7 = 45.68.2 =16.50.9 = 9.22.3 = 三、用计算器计算下面各题。47.949.4 = 4.870.3 = 239.623= 0.982.45= 2.0140.53 = 7.360.54=14.912.1 = 2.2570.37 =6.3990.79 = 3.950.76=解决问题(一)一、直接
21、写得数。5.4-4.5= 3.90.01= 17.1717=7.80.1= 40.025= 3.86-0.76=5+0.75= 0135.72= 0.720.80.9=6.110= 7.2-7.28= 8-3.725=9+0.05= 60.4= 5-0.4=7.657.65= 1+4.57= 100-98.25=360.2= 6.10.1= 50.5=0.560.7= 0.524= 5.80.10.1=7.21.2 2.30.1 4.26 0.1258 4.50.9 2.54二、计算。1、2.6与4.8的和,除以6.2与2.5的差,商是多少?2、7.5除12.5与0.6的积,商是多少?3、一张
22、长1.8米,宽0.9米的长方形纸,可以做面积是0.405平方米的小旗多少面?解决问题(二)一、直接写得数。0.20.4 18.21.8 6055.910.26 8.44 9.635.22 2.53 1.20.43.063 5.73 3.123 0.459 3.60.6 2.72 8.40.7 0.340.17 40.44 1.26 0.720.6 2.61.31.40.7 3.60.06 5.60.09 0.30.01 0.40.5 5.10.17 0.5252= 3.20.4 0.281.4二、计算。1、 把 65. 8 平均分成 47 份,每份是多少?2、 0.72 加上 30. 45 除
23、以 8. 7 的商,和是多少?3、 一个数的 2. 6 倍是 9. 62 ,这个数是多少?4、 235. 17 除以 3. 9 的商,再除以0.3 ,得多少?解决问题(三)一、直接写得数。430.01 3.720.2= 0.78-0.6=990.1 3.2-2= 60.1258=1.94 8.80.11= 41.20.25=0.1258 1.840= 2.5-3.61.8=2.30.1 85.1= 12-0.054=4.23 2.013= 16-4.5-5.5=1.80.3 3.724= 13-0.5-4=1.10.7= 2.32-0.4= 1.9+5.151=3.250= 3.20.5= 1
24、0.010.1=1.250.5= 1.293= 7.2-1.2+6.7=二、解决问题。1、用一部收割机收大豆,5天可以收割20.8公顷,照这样计算,7天可以收割多少公顷?60.4公顷大豆需要多少天才能收完?2、服装厂做一件男上衣用2.5米布料,现在有42米布料,可以做多少件这样的男上衣?3、每一个油桶最多装4.5千克油,购买62千克,至少要准备多少只这样的油桶?4、某工厂五月份用煤125吨,是四月份用煤量的2.5倍,四月份和五月份共用煤多少吨?解决问题(四)一、直接写得数。90.5 1.258 2.634.12 0.350.2 7.50.10.90.3 10.06 90.51.258 0.20.4 8.21.810035.22 2.50.4 2.45 0.224 0.90.52 3.991 03.52 2.55 8.47 0.3417 2.50.5 8.40.70.340.