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小数加减法专项练习题有答案ok.docx

1、小数加减法专项练习题有答案ok小数加减法专项练习 200题(有答案)(1)7.4+12.86 (10)12.42+0.48(2)205.674 (11)0.56+11.534(3)141.248.98 (12)4422.13(4)102+4.36 (13)9122.035(5)32.1527.45 (14)52.6+21.237(6)12.9+5.01 (15)9.152.18(7)29.46(9.46+3.8) (16)3.851.5+1.32,(8)15.75+0.652.75+3.35 (17)15.4+6.87(9)65.714.99 (18)3.56+27.84(19)10082.1

2、3=17.87 (29)5.9+28.6516.57(20)123.5647.9+51.7 (30)57.53.2516.75,(21)2.7+3.1+2.9+3.2, (31)6.02+3.6+1.98(22)28.42+19.48 (32)1.29+3.7+2.71+6.3(23)42.56+3.124 (33)3.070.381.62(24)8130.75 (34)3.25+1.790.59+1.75(25)15.6十0.237 (35)7.5+4.96.1(26)148.225.6224.38 (36)14.8+7.94.8(27)4.520.740.26 (37)2.608+2.84

3、(28)0.42+5.4+1.58+2.6 (38)6.073.8692/22(39)1.50.306 (49)12017.832.17,(40)76.8+26.82 (50)17.176.83.26.17(41)102.0737.257 (51)73.81.6413.85.36(42)48.64+18.6 (52)6.75(0.9+3.75)(43)54.755.2514.75, (53)27.385.34+2.624.66(44)4.68+14.79+5.3210.79, (54)35.724.9(5.72+5.1)(45)48.912.70.3, (55)0.730.250.73+0.2

4、5(46)56.439.7+24.3, (56)5.3+0.1+5.30.1(47)3.62.8+3.47.2, (57)12.74.85.2(48)3.67+18.5+6.33, (58)23.256.753.253/22(59)4.58+2.39+(5.42+7.61) (69)1+12.7+5.9+17.3(60)9.053.863.14 (70)27042.517.5(61)209.180.82 (71)15.68(7.784.32)2.32,(62)6.53(1.53+2.6) (72)0.9+9.9+99.9+999.9,(63)5.521.0740.926 (73)25.468.

5、231.76,(64)4.21+1.04+0.79 (74)9.4+0.36.4,(65)1.36+4.85+2.64+6.15 (75)15.25+4.72+4.75+5.28,(66)83.712.830.17 (76)34.823(4.82+15.2),(67)4.32+5.43+6.68 (77)12.74.85.2,(68)17.176.83.2, (78)3.1+25.78+6.9,4/22(79)73.81.6413.85.36, (89)12.8(4.38+1.614)(80)2.15+8.73+1.27+7.85 (90)15.17(3.6+4.9),(81)11.87(8.

6、2+1.87), (91)35.6+(12.64.4),(82)5.423.871.13, (92)16.4+3.5+83.6+166.5(83)4.381.56+0.620.44, (93)4.652.551.45,(84)46.715.034.97 (94)1.28+0.86+38.72,(85)4.52+0.61+1.39+6.48 (95)25.743.576.43,(86)4.27(1.961.73) (96)14.54.685.32,(87)7.27(1.98+0.27), (97)0.485+0.64+3.36,(88)13.7+8.659.628, (98)72.519.341

7、2.66,5/22(99)14.024.5+0.98, (109)0.6+0.940.208,(100)5.76+2.43+0.24+10.57, (110)27.73(4.731.85),(101)9.28(3.28+2.55), (111)3.84+26.5(208.6),(102)9.5+4.856.13, (112)7.385.14+3.622.86,(103)10.751.862.753.16, (113)5.86+13.089.27,(104)1.3+0.94+0.06+7.7, (114)25.4(15.46.4),(105)4.45+0.63+5.55, (115)47.237

8、.235.89,(106)45.5(0.98+5.5), (116)4.45+0.63+5.55,(107)0.960.28+0.040.72, (117)5.28(2.9+1.28),(108)12.7+12.5+0.5, (118)5.25+7.862.86+4.75,6/22(119)0.960.28+0.040.72, (129)13.67(5.45+3.67),(120)9.42+7.39+1.58, (130)4.26+5.481.26+4.52,(121)18.41.65.4, (131)14.67+25.91+15.33+4.09,(122)75.7+39.423.86, (1

9、32)10.75(2.40.86),(123)21.21+38.389.79, (133)9.614.38+0.35,(124)47.28+1.39+52.72, (134)3.87+4.92+1.13,(125)2.451.68+1.54, (135)46.248.661.34,(126)158.131.87, (136)21.99.220.78+8.1,(127)5.14+3.2256.302, (137)35.47+39.8812.37,(128)3.95+5.361.95, (138)93.215.9914.01,7/22(139)15.37+28.94+4.63+1.06, (149

10、)254.7+5.3,(140)42.37(12.379.78), (150)1.3+2.83+8.7+0.17,(141)38.7819.59+41.2230.41, (151)2.472.23.8+7.53,(142)1.9+19.9+199.9+0.3 (152)6.89+4.7+2.11+5.3,(143)429+31.1+2.04, (153)7.462.371.63,(144)10027.242.8, (154)14(3.65+0.24),(145)9(3.02+1.25), (155)70.81.251.75,(146)1.81.57+0.2, (156)5.81+8.3+4.1

11、9+11.7,(147)5.032.5+0.96, (157)4.2+7.64+5.8+2.36,(148)35.72(5.9+5.72), (158)14.282.637.37,8/22(159)6.8+5.26+3.74+3.2, (169)15.19+3.36+4.64+4.81,(160)6.213.8+2.2, (170)4.7+7.69+5.3+2.31,(161)6.03+3.7+2.97, (171)53.7813.637.4+6.22,(162)17.436.572.43, (172)60(21.58.8)+7.3,(163)20.47(1.47+6.8), (173)9.5

12、+4.856.13,(164)13.26+4.71+3.47+5.29, (174)75.8(15.34.8),(165)22.74+8.6813.74, (175)51.278.661.34,(166)12.566.643.36, (176)28.43.961.04+4.6,(167)45.5(0.98+5.5), (177)70.87.251.75(168)13.6+7.94+6.4, (178)5.81+8.3+4.19+11.79/22(179)794198, (189)15.377.59+5.7312.41,(180)6756193207, (190)11.727.85(1.26+0

13、.46),(181)0.9+1.08+0.92+0.1, (191)15.37+28.44+12.56,(182)13.596.910.09, (192)12.64(3.96+4.64),(183)4.58+3.38+(5.48+6.62) (193)36.264.78+3.74,(184)73.75(4.3+8.75) (194)7.34+7.57+12.66+6.43,(185)5(4.192.83), (195)78.6523.1214.88,(186)1.39+0.72+0.61+3.28, (195)4.58+2.39+(5.42+7.61),(187)83.76.3, (196)8

14、.27+5.84+1.73+2.16,(188)8.28(1.28+3.7), (197)18.519.080.92,10/22(198)0.09+0.6+5.91+3.4, (208)5.81+8.3+4.19+11.7,(199)7.85+6.76+2.15 (209)3.781.46+1.54,(200)18.433.767.24 (210)8.45(5.45+2.98);,(201)21.65+(4.83.65) (211)3.01+8.2+6.99+1.8,(202)9.64(4.641.23) (212)4.3(5.985.7),(203)2.7+17.6+3.35.6 (213)

15、5.520.550.45,(204)9.873.5+2.138.5 (214)19.626.72+80.43.28,(205)5.64+4.97+0.03, (215)27.510.80.2,(206)10.933.744.26, (216)43.5+1813.5,(207)106.83.2, (217)63.5(43.5+20),11/22(218)75.3624.9+24.6425.1, (224)104.445.56,(219)12.566.643.36, (225)32.63+7.896.4,(220)45.5(0.98+5.5), (226)3.97+0.71.32,(221)6+7

16、.94+6.4, (227)30(3.8+0.75),(222)5.41+3.462.46, (228)75.6(14.38.3),(223)2.030.182.82+7.97,12/22参考答案:( 1)7.4+12.86=20.26;( 2)205.674=14.326;( 3)141.248.98=92.22;( 4)102+4.36=106.36;( 5)32.1527.45=4.7;验算:( 6)12.9+5.01=17.91;验算:( 7)29.46(9.46+3.8),=29.469.463.8,=203.8,=16.2;( 8)15.75+0.652.75+3.35,=(15.

17、752.75)+(0.65+3.35),=13+4,=17;( 9)65.714.99,=65.71(50.01),=65.715+0.01,=60.71+0.01,=60.72;(10)12.42+0.48=12.9,(11)0.56+11.534=12.094,(12)4422.13=21.87,(13)9122.035=68.965,(14)52.6+21.237=73.837,(15)9.152.18=6.97(16)3.851.5+1.32,=2.35+1.32,=3.67;(17)15.4+6.87=22.27验算:(18)3.56+27.84=31.4验算:(19)10082.1

18、3=17.87验算:(20)123.5647.9+51.7=127.3613/22=148.250,=98.2(27)4.520.740.26=4.52(0.74+0.26)=4.521验算:=3.52;(28)0.42+5.4+1.58+2.6=(0.42+1.58)+(5.4+2.6)=2+8=10;(21)2.7+3.1+2.9+3.2,(29)5.9+28.6516.57=17.98;=2.7+(3.1+2.9)+3.2,=2.7+6+3.2,=11.9(22)28.42+19.48=47.9(30)57.53.2516.75,=57.5(3.25+16.75),验算:=57.520,

19、=37.5;(31)6.02+3.6+1.98(23)42.56+3.124=45.684=6.02+1.98+3.6,=8+3.6,=11.6;(32)1.29+3.7+2.71+6.3验算:=(1.29+2.71)+(3.7+6.3),=4+10,=14;(33)3.070.381.62(24)8130.75=50.25=3.07(0.38+1.62),=3.072,=1.07;(34)3.25+1.790.59+1.75验算:=(3.25+1.75)+(1.790.59),=5+1.2,=6.2;(35)7.5+4.96.1(25)15.6十0.237=15.837=12.46.1,=6

20、.3;(36)14.8+7.94.8=14.84.8+7.9,验算:=10+7.9=17.9(37)2.608+2.84=5.448,( 26)148.225.6224.38=148.2(25.62+24.38),14/22(38)6.073.869=2.201,=(17.176.17)(6.8+3.2),=1110,=1;(51)73.81.6413.85.36(39)1.50.306=1.194,=73.813.8(1.64+5.36),=607,=53;(52)6.75(0.9+3.75)(40)76.8+26.82=103.62,=6.753.750.9,=30.9,=2.1;(53)

21、27.385.34+2.624.66(41)102.0737.257=64.813,=22.04+2.624.66,=24.664.66,=20;(54)35.724.9(5.72+5.1)(42)48.64+18.6=67.24=35.72(4.9+5.72+5.1),=35.7215.72,=20;(55)0.730.250.73+0.25(43)54.755.2514.75,=0.750.750.25+0.25,=54.75(14.75+5.25),=00.25+0.25,=54.7520,=00,=34.75;=0;(44)4.68+14.79+5.3210.79,(56)5.3+0.

22、1+5.30.1=(4.68+5.32)+(14.7910.79),=5.3+5.3+0.10.1,=10+4,=10.6+0.10.1,=14;=10.70.1,(45)48.912.70.3,=10.6;=48.9(12.7+0.3),(57)12.74.85.2=48.913,=12.7(4.8+5.2);=35.9;=12.710,(46)56.439.7+24.3,=2.7=16.7+24.3,(58)23.256.753.25=41;=23.25(6.75+3.25),(47)3.62.8+3.47.2,=23.2510,=(3.6+13.4)(2.8+7.2),=13.25=17

23、10,(59)4.58+2.39+(5.42+7.61)=7;=(4.58+5.42)+(2.39+7.61)(48)3.67+18.5+6.33,=10+10,=(3.67+6.33)+18.5,=20;=10+18.5,(60)9.053.863.14,=28.5;=9.05(3.86+3.14),(49)12017.832.17,=9.057,=12017.832.17,=2.05;=120(17.83+2.17),(61)209.180.82,=12020,=20(9.18+0.82),=100;=2010,(50)17.176.83.26.17=1015/22(62)6.53(1.5

24、3+2.6),=15.45;=6.531.532.6,(74)9.4+0.36.4,=42.6,=(9.46.4)+0.3,=1.4=3+0.3,(63)5.521.0740.926,=3.3;=5.52(1.074+0.926),(75)15.25+4.72+4.75+5.28,=5.522,=(15.25+4.75)+(4.72+5.28),=3.52=20+10,(64)4.21+1.04+0.79,=30;=4.21+0.79+1.04,(76)34.823(4.82+15.2),=5+1.04,=34.8234.8215.2,=6.04=30.00315.2,(65)1.36+4.8

25、5+2.64+6.15,=14.803;=(1.36+2.64)+(4.85+6.15),(77)12.74.85.2,=4+11,=12.7(4.8+5.2),=15;=12.710,(66)83.712.830.17,=2.7;=83.7(12.83+0.17),(78)3.1+25.78+6.9,=83.713,=(3.1+6.9)+25.78,=70.7;=10+25.78,(67)4.32+5.43+6.68,=35.78;=4.32+6.68+5.43,(79)73.81.6413.85.36,=11+5.43,=(73.813.8)(1.64+5.36),=16.43;=607,

26、(68)17.176.83.2,=53=17.17(6.8+3.2),(80)2.15+8.73+1.27+7.85=17.1710,=(2.15+7.85)+(8.73+1.27),=7.17;=10+10,(69)1+12.7+5.9+17.3=20;=1+(12.7+17.3)+5.9,(81)11.87(8.2+1.87),=1+30+5.9,=11.871.878.2,=36.9;=108.2,(70)27042.517.5=1.8;=270(42.5+17.5),(82)5.423.871.13,=27060,=5.425,=210;=0.42;(71)15.68(7.784.32)2.32,(83)4.381.56+0.620.44,=15.687.78+4.322.32,=(4.38+0.62)(1.56+0.44),=(15.68+4.32)(7.78+2.32),=52,=2010,=3;=10;(84)46.715.034.97(72)0.9+9.9+99.9+999.9,=46.7(15.03+4.97),=10.1+100.1+1000.1+10

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