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五年级数学上册计算题专项练习一、直接写出得数。2.54=200.5=7.21.2=3.86100=3.90.01=98,4100=9.11.3=8.210=1-0.45=36+2.45=0.480=0.427= 73425=0.691=1.210.6=0,50.2=8.42.1= 761000= 8.7-5=1.288=4025= 0.51100= 0.5899= 0.60.9=0.10.5=0.520.52=12.4-(2.4+3.25)=12.50.50.4= 1.51.51.5= 1084184=2.6+3.1-2.6+3.1= 5.7a+a= 102.5= 2.51.950.4=x-0.3x=4a7= 7.20.9= 0.270.03= 00.9951000=1.2580.625=7.54=0.90.3= 6.868= 04.614.61=mm= m+m= m1=0.58= 3.60.4= 39.680= 47.61= 6.450.01= 40.5= 120.06= 121.2= 330= 500.04= 800.3=0.157= 3.26+3.24= 2.540.36= 3.60.4 12.58= 1.19 0.2+0.80.5= 6.031000= 100.6= 30.9=0.10.1= 0.240.5= 5.43.6= 1.250.25= 0.60.8= 10.24.5 2.56 90.25 0.1254= 4.7644.7= 1.2580.5= 160.01= 1.780.3= 0.270.003= 2.52.34= 0.010.1= 1.820= x-0.4x= 5d-2d= 38.500.38= 3.60.4= 0.60.8 2.43 0.120.7 0.540.54= 45 2.50.4= 1.60.5 0.20.05 3.61.22.4= 二、列竖式计算并验算2.70.32= 3556= 0.366.9= 15.3612= 11.20.142.341.5= 11.72.6= 25.242= 3.7434= 2.732.6 1.722.6 0.233.8 0.854.5 4.1423 2.77. 62961 (得数保留两位小数) 4.82.3 (得数保留一位小数) 6.490.58 (得数保留三位小数) 0.271.1 (得数保留两位小数)4.71.36 (得数保留一位小数) 0.961.7 (得数保留两位小数)3.84.5 (得数精确到百分位) 5.720.18 (省略十分位后面的尾数)1.553.8 (省略百分位后面的尾数) 3.817 (得数精确到十分位)2818=103=78.611=1.59.9=12.611= (用循环小数表示。)1、(得数保留一位小数)(1)0.380.23 ( 2) 5.793.6 (3) 4.60.25 (4)624(5)52.9575 (6) 3.017 (7)4.9511 (8)84.0131(用乘法验算)(9)0.64619 (10)4.70.59 2、(除不尽的保留两位小数)(11)31.2 (12) 2.70.36 (13) 88.41.7 (14) 7.5250.38(15)415 (16)91.20.57 (17) 84.841.2 (18) 5.636.1 (19)5677 (20)1.474.2 (21)19.190.95 (22) 56.296.1(23)2333 (24)7.410.57 (25) 21240 (26)9.6816 (27) 3.850.76 (28)53.34.7 (29)56.296.1 (30)28.7431 3、得数用循环小数表示。(31) 0.20.06 (32) 1311 (33) 30.133 (34) 1715(35)7.82.2 (36)5.529 (37)67.811 (38)87三、脱式计算。40.22.716.2 (24.832)7 7.32-4.370.8 4.050.050.817.620.16-0.16 8.75(12.57) 721.44(0.10.05)0.432(6.21-6.09) 4.80.4-2.121 (8.15.6)0.910.59.28(2.1-1.7)2.5 6.4(.2.1)0.8 3.4(1.2+0.5)50.8133.125.28 118(11.412.50.8) 42(5.250.25)0.412.60.280.2四、简便计算。1.255.78 100.22.5 5.612.5 9.42+2.80.254.599 6.51.98 3.250.2 1.561.7+0.441.711.72-7.85-1.72 1.825+125 5.58.20.18550.250.0894 8.81.25 2.614.52.6 16.52.614.32.50.42.354.640.53623.512.51.360.8321.010.13.2643.5153.5152.610.14.04-4.042.023.540.43.540.4 5.749.9+5.744.83101-4.835.91-5.9132.53.60.9 12.50.38.8 1.25(1008) 3.51.02+350.098 3.41.018.48.41.51.8 12.54.5+4.512.5+12.5 1.298 2.41.250.3 0.27990.2750(6.70.02)(0.252.525)0.4 13.52.50.1250.48 2.53.20.125 6.80.750.5 13.750.1252.75 1.53+23.47.2 22.913.6812.68 4.7114.7 (65) 28.86.36.318.8 (66)4.85.24 (67)5.37(2.371.8) (68)10.012.781.59(69)2.851.250.8 (70)10.50.2512 (71) 3.791.6+7.391.691.6(72)3.20.823.21.18 (73)4.050.51.14 (74) 1.58991.58(75)12.50.42.58 (76)7.7520(3.24-3.04) (77)43.21.834.6 (78)4.27.8+2.24.2 (79) 0.873.16+4.64 (80)12.54.8(81)4.74.7+4.76.34.7 (82)12.53.20.25 (83)23.47.26.50.8 (84)20.649.830.17 (85)6.8(1.2+0.5)0.04 (86) 7.265.41.741.6 (87)2.062.0699 (88)9.5
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