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五年级小数四则混合运算专项练习276题含答案.docx

1、五年级小数四则混合运算专项练习276题含答案小数四则混合运算专项练习276题(含答案)(1) 0.111.8+8.20.11 (2) 2.3499+2.34 (3) 5.42.70.8(4) 132101 (5) 6.251.250.8 (6) 2.516(7) 6.331016.33 (8) 1.561.7+0.441.7(9) 1.8(3.412.9)0.03(10) 0.125322.5(11) 1.25818.50.25818.5 (12) 8.480.80.9(13) 1.252.4 (14) 5.85(1.3+0.5)6(15) 17.176.83.26.17 (16) 5.4(1

2、.3+2.15)0.2 (17) 8.40.6+8.40.4(18) 16.810.1 (19) 10.90.90.2+1.8 (20) 1.253.20.25(21) 1.36+4.85+2.64+6.15 (22) 98.52.54 (23) 5.42.5(3.72.9)(24) 0.8(43.68)0.01 (25) 83.712.830.17 (26) 5.96+13(3.23.12)(27) 4.322.41.7;(28) 16.24.5+3.84.5;(29) 9.053.863.14;(30) 7.28+0.720.9(31) 4.32+5.43+6.68 (32) 17.176

3、.83.2 (33) 5.299+5.29(34) 16.810.1 (35) 2.749.5+50.274 (36) 0.36+9.63.2(37) 3.7525+6.2525 (38) 25.468.231.76 (39) 2.9+7.110 (40) 1.25320.25(41) 15.68(7.784.32)2.32 (42) 0.253.21.25 (43) 9.991.01(44) 4.631.4+46.30.86 (45) 17.50.812.5 (46) 0.9+9.9+99.9+999.9(47) 2.999+2.9 (48) 2511.24 (49) 23.256.753.

4、25(50) 1253.22.5 (51) 3.610.1 (52) 5.82.7+0.5873(53) 3.6+6.41.8 (54) (1.48+3.02)(3.60.5) (55) (36.74.9)10131.8(56) 6.331016.33 (57) 35.651.73 (58) 1.655.455.40.6 (59) 17.685.2+2.71.5(60) 1.080.80.27(61) 1020.45(62) 22.781.250.8(63) 0.341010.34(64) 0.125322.5(65) 0.86.30.83.8(66) 5043.22.08(67) (200.

5、89)5.7(68) 2.41.5+3.61.5 (69) 7.385.14+3.622.86(70) 0.121.8+8.20.12 (71) 5.40.51(1.21.03)(72) (8.15.6)0.91.050.04(73) 10.80.8(0.35+0.05) (74) 81(2.32.25)(75) 2.649.9+0.264 (76) 4.52+0.61+1.39+6.48 (77) 4.27(1.961.73)(78) (294.419.26)(6+8)(79) 12.50.760.482.5(80) 4.98+8.022.5 (81) 60.840.82.5 (82) 0.

6、869.612.5(83) 4.9899+4.9 (84) 6.483.22.5 (85) 1.27.6+7.66.8(86) (9.45.8)2.07 (87) 12.544.563.441.54(88) (9.365+9.36+9.362)1.25 (89) 7.2360.1814.30.02(90) 9.60.40.25 (91) 29.7(5.850.65)(92) 7.49.9 (93) 3.842.70.64(94) 8.688.680.560.5 (95) 4.74.7+4.7+4.34.7(96) 2.72(8.26.5)0.5;(97) 9.12+9.12960.2;(98)

7、 28.40.40.25;(99) 27.3627.367.6(100) 3.250.45+6.750.45 (101) 31.524.53.5 (102) 7.5102(103) 6.3+3.72.8(104) 2.15+8.73+1.27+7.85 (105) 11.87(8.2+1.87) (106) 5.423.871.13(107) 4.381.56+0.620.44 (108) 0.42702 (109) (40+1.25)8(110) (12.50.05)8 (111) 2.68.5+8.57.4 (112) 9.96.96.93.9(113) 5.699+5.6 (114) 2

8、.5(1.9+1.9+1.9+1.9) (115) 7.21.258(116) 52.4(15+0.6)1.6(117) 9.8799+9.87 (118) 46.80.90.4 (119) 5.517.3+6.75.5(120) 994.2+4.2 (121) 0.251.253.2(122) 6.414+156.4+6.4 (123) (1.3+1.30.1258)(8077.4)(124) 4(25+2.5+0.25)111 (125) 6.25(17.23.64.5)0.32(126) 28.499+28.4 (127) 0.942.50.45 (128) 40.812.52.5 (1

9、29) 17.50.2517+13(130) 10.187 (131) 2.3+3.19(2219.8) (132) 1.257.2(133) 9.11.266.24 (134) 7.3+12.83.82.3(135) (5.36+7.64)13100 (136) 7.575(5.631.88)0.2(137) 7.5(5.5+1.24) (138) 0.26+15.68+9.74+2.32 (139) 13.26+9.553.26 (140) 6.1+3.96.1+3.9(141) 31.70.63(保留2位小数) (142) 2.41.5+3.61.5(143) 0.320.25+0.08

10、4 (144) (9.6+1.483.7)8(145) 5.84(1.340.14)(146) 5.40.51(1.21.03)(147) 21.353.2516.75 (148) 33.02(148.490.85)2.5(149) 322.50.125 (150) 18.1+(30.2990.23)1(151) 67(2.98+0.67)(152) 81673.86(153) (45+14)73+710(154) 13.70.1258 (155) 0.813(3.12+5.28)(156) 1020.56 (157) 1.531.7+0.471.7(158) 5.18+0.73+0.82 (

11、159) 0.751.81.5 (160) 12.57.10.8(161) 6.1299+6.12 (162) 8.60.86+80.35(163) 5.6(18.58.50.5)(164) 0.1254.7880 (165) 2.83.6+1.42.8 (166) (0.4+40)2.5(167) 78.717.73.6 (168) 180.3(86.5) (169) 12.7+12.5+0.5(170) 912.60.05= (171) 6.33.7+6.36.3= (172) (3.7+1.70.4)2.5=(173) 7.28+3.22.5= (174) 0.74+0.97.4= (1

12、75) 7.80.1250.8=(176) 37.50.3(1.340.84)(177) (2.5+27.751.5)1.6(178) 6.213.8+2.2 (179) 6.03+3.7+2.97(180) 17.436.572.43 (181) 20.47(1.47+6.8)(182) 13.26+4.71+3.47+5.29 (183) 22.74+8.6813.74(184) 100.22.5 (185) 644.5+3.645 (186) 1.253.20.8(187) 14.5102 (188) 14.64+3.72.8 (189) 8.40.210.5(190) 0.125980

13、.3 (191) 4.6250.66(192) 5.782.3+5.78+5.786.7 (193) 7.7520(3.243.04)(194) 1.250.580.2 (195) 0.979+0.97 (196) 5.433.82.9(197) 0.4(3.20.8)0.15 (198) 5.7+1.90.27.6(199) 32.46.3+32.43.7 (200) 18.210.6(0.90.75)(201) 0.253.8540 (202) 1.463.5+3.54.54(203) 712.50.8 (204) 4.73.6+4.76.4 (205) 1.45(2.8+4.4)2.4(

14、206) 4.2(6.183.03)+6.3 (207) 15.026.8(1.02+1.2 ) (208) 0.6(50.68)1.2(209) 2.74+6.30.25(210) (6.02+2.8 )0.42.05 (211) 3.083.5+6.23.08+3.080.3(212) 2.3+3.91(2219.7) (213) 21.664.8(48.62.72)(214) 93.63.6+1.43.6 (215) 0.250.80.1250.4 (216) 2.71.52.7(217) 9.08+5.45+11.92+4.55 (218) 1.25301.20.8(219) 0.6+

15、0.940.208 (220) 4.851.258 (221) (6422.41.4)1.2(222) 18.36.253.75 (223) 2.83.6+1.42.8 (224) 6.614.5(1.7+1.8)(225) 0.259.874 (226) 36.72.1+10.8 (227) 8.450.450.1(228) 0.73102 (229) 7.85.6+2.34.4 (230) 76.32776.317(231) 7.0523.7+7.0576.3(232) (7.65.2)0.4+2.5432(233) 17.685.2+2.71.5 (234) 35.651.73 (235

16、) (1.10.78)(2.71.95)(236) 1.30.754(237) 1.081.81.2(238) 50.41.91.8(239) 0.820.25+1.180.25(240) 8.5(2.36+2.42)0.25 (241) 3.9(1.3+0.6)63.6 (242) 4.256.3+3.74.25(243) 2050.99 (244) 25.67.492.51 (245) 2.5(6.84.9)0.8 (246) 1024.5 (247) 3.4(1.2+0.5)5 (248) 8(201.25)(249) 0.654+10.96.5 (250) 22.71.250.8 (2

17、51) 3.912.8+6.092.8(252) 6.23+3.09= (253) 132.459.8= (254) 6.620.84= (255) 2.070.023=(256) 20.026(8.6+9.7)0.9230.19(257) 0.125322.5 (258) 0.86.30.83.8 (259) 50.43.22.08(260) 204(3.40.5) (261) (43.26+2.34)7.5 (262) (200.89)5.7(263) 13.250.8+1.751.2; (264) 2.599+2.5;(265) 10.36+4.816.55; (266) 12.52.4

18、(267) 38.7819.59+41.2230.41 (268) 2.744.86+4.866.26+4.86(269) 0.08(12.5+2.5)0.1 (270) 25.92+(10.114.50.2)(271) 0.48712.548.7 (272) (8.16+2.09)(10.39.3)0.4(273) 1.561.7+0.441.7 (274) 12.5(7.21.9)0.8 (275) 0.252010+20.1075 (276) 30.8(6.344.59)4参考答案:(1)0.111.8+8.20.11,=0.11(1.8+8.2),=0.1110,=1.1;(2)2.3

19、499+2.34,=2.34(99+1),=2.34100,=234;(3)5.42.70.8,=20.8,=1.6;(4)132101,=132(100+1),=132100+132,=13332;(5)6.251.250.8,=6.25(1.250.8),=6.251,=6.25;(6)2.516,=(2.54)4,=40(7)6.331016.33,=6.33(1011),=6.33100,=633;(8)1.561.7+0.441.7,=1.7(1.56+0.44),=1.72,=3.4;(9)1.8(3.412.9)0.03,=1.80.510.03,=1.817,=30.6;(10

20、)0.125322.5,=(0.1258)(42.5),=110,=10(11)1.25818.50.25818.5,=18.5(1.2580.258),=18.51,=18.5;(12)8.480.80.9,=10.60.9,=9.54;(13)1.252.4,=1.2580.3,=100.3,=3;(14)5.85(1.3+0.5)6,=5.851.86,=3.256,=19.5(15)17.176.83.26.17=(17.176.17)(6.8+3.2),=1110,=1;(16)5.4(1.3+2.15)0.2=5.43.450.2,=5.417.25,=93.15;(17)8.40

21、.6+8.40.4=14+21=35;(18)16.810.1=16.810+16.80.1,=168+1.68,=169.68;(19)10.90.90.2+1.8=10.94.5+1.8,=8.2;(20)1.253.20.25=(1.250.8)(40.25),=11,=1(21)1.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,=15;(22)98.52.54,=98.5(2.54),=98.510,=9.85;(23)5.42.5(3.72.9),=5.42.50.8,=5.42,=2.7;(24)0.8(43.68)0.01,=0

22、.80.320.01,=0.2560.01,=25.6;(25)83.712.830.17,=83.7(12.83+0.17),=83.713,=70.7;(26)5.96+13(3.23.12),=5.96+130.08,=5.96+1.04,=7(27)4.322.41.7,=1.81.7,=3.06;(28)16.24.5+3.84.5,=(16.2+3.8)4.5,=204.5,=90;(29)9.053.863.14,=9.05(3.86+3.14),=9.057,=2.05;(30)7.28+0.720.9,=7.28+0.8,=8.08(31)4.32+5.43+6.68,=4.

23、32+6.68+5.43,=11+5.43,=16.43;(32)17.176.83.2,=17.17(6.8+3.2),=17.1710,=7.17;(33)5.299+5.29,=5.29(9+1),=5.2910,=52.9;(34)16.810.1,=16.810+16.80.1,=168+1.68,=169.68;(35)2.749.5+50.274,=2.749.5+0.52.74,=2.74(9.5+0.5),=2.7410,=27.4;(36)0.36+9.63.2,=0.36+3,=3.36(37)3.7525+6.2525,=25(3.75+6.25),=2510,=250

24、;(38)25.468.231.76,=25.46(8.23+1.76),=25.469.99=15.45;(39)2.9+7.110,=2.9+71,=73.9;(40)1.25320.25=(1.258)(40.25),=101,=1(41)15.68(7.784.32)2.32,=15.687.78+4.322.32,=(15.68+4.32)(7.78+2.32),=2010,=10;(42)0.253.21.25,=0.2540.81.25,=(0.254)(0.81.25),=11,=1;(43)9.991.01,=(100.01)1.01,=10.10.0101,=10.0899

25、;(44)4.631.4+46.30.86,=46.30.14+46.30.86,=46.3(0.14+0.86),=46.31,=46.3;(45)17.50.812.5,=17.5(0.812.5),=17.51,=17.5;(46)0.9+9.9+99.9+999.9,=10.1+100.1+1000.1+10000.1,=(1+10+100+1000)(0.1+0.1+0.1+0.1),=11110.4,=1110.6(47)2.999+2.9=(99+1)2.9,=1002.9,=290;(48)2511.24=25411.2,=10011.2,=1120;(49)23.256.75

26、3.25=23.25(6.75+3.25),=23.2510,=13.25(50)1253.22.5,=12580.42.5,=(1258)(0.42.5),=10001,=1000;(51)3.610.1,=3.6(10+0.1),=3.610+3.60.1,=36+0.36,=36.36;(52)5.82.7+0.5873,=5.82.7+5.87.3,=5.8(2.7+7.3),=5.810,=58;(53)3.6+6.41.8,=3.6+11.52,=15.12;(54)(1.48+3.02)(3.60.5),=4.51.8,=2.5;(55)(36.74.9)10131.8,=31.810131.8,=31.8(1011),=31.8100,=3180(56)6.331016.33=6.33(1011),=6.33100,=633;(57)35.651.73,=35.68.65,=26.95;(58)1.655.455.40.6,=55.4(1.60.6),=55.41,=55.4;(59)17.685.2+2.71.5,=3.4+4.05,=7.45(60)1.080.80.27=1.080.270.8,=40.8,=3.2;

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