(43)小数加减法专项练习200题(有答案)

(43)小数加减法专项练习200题(有答案)
(43)小数加减法专项练习200题(有答案)

小数加减法专项练习200题(有答案)

(1)7.4+12.86

(2)20﹣5.674

(3)141.2﹣48.98

(4)102+4.36

(5)32.15﹣27.45

(6)12.9+5.01

(7)29.46﹣(9.46+3.8)(8)15.75+0.65﹣2.75+3.35 (9)65.71﹣4.99 (10)12.42+0.48 (11)0.56+11.534 (12)44﹣22.13

(13)91﹣22.035 (14)52.6+21.237 (15)9.15﹣2.18 (16)3.85﹣1.5+1.32,(17)15.4+6.87 (18)3.56+27.84

(19)100﹣82.13=17.87 (20)123.56﹣47.9+51.7 (21)2.7+3.1+2.9+3.2,(22)28.42+19.48

(23)42.56+3.124

(24)81﹣30.75

(25)15.6十0.237

(26)148.2﹣25.62﹣24.38 (27)4.52﹣0.74﹣0.26 (29)5.9+28.65﹣16.57 (30)57.5﹣3.25﹣16.75,(31)6.02+3.6+1.98

(32)1.29+3.7+2.71+6.3 (33)3.07﹣0.38﹣1.62 (34)3.25+1.79﹣0.59+1.75 (35)7.5+4.9﹣6.1

(36)14.8+7.9﹣4.8

(37)2.608+2.84

(39)1.5﹣0.306

(40)76.8+26.82

(41)102.07﹣37.257

(42)48.64+18.6

(43)54.75﹣5.25﹣14.75,(44)4.68+14.79+5.32﹣10.79,(45)48.9﹣12.7﹣0.3,

(46)56.4﹣39.7+24.3,

(47)3.6﹣2.8+3.4﹣7.2,(49)120﹣17.83﹣2.17,(50)17.17﹣6.8﹣3.2﹣6.17 (51)73.8﹣1.64﹣13.8﹣5.36 (52)6.75﹣(0.9+3.75)(53)27.38﹣5.34+2.62﹣4.66 (54)35.72﹣4.9﹣(5.72+5.1)(55)0.73﹣0.25﹣0.73+0.25 (56)5.3+0.1+5.3﹣0.1 (57)12.7﹣4.8﹣5.2.

(59)4.58+2.39+(5.42+7.61)(60)9.05﹣3.86﹣3.14 (61)20﹣9.18﹣0.82

(62)6.53﹣(1.53+2.6)(63)5.52﹣1.074﹣0.926 (64)4.21+1.04+0.79

(65)1.36+4.85+2.64+6.15 (66)83.7﹣12.83﹣0.17 (67)4.32+5.43+6.68 (69)1+12.7+5.9+17.3

(70)270﹣42.5﹣17.5

(71)15.68﹣(7.78﹣4.32)﹣2.32,(72)0.9+9.9+99.9+999.9,

(73)25.46﹣8.23﹣1.76,

(74)9.4+0.3﹣6.4,

(75)15.25+4.72+4.75+5.28,

(76)34.823﹣(4.82+15.2),(77)12.7﹣4.8﹣5.2,

(79)73.8﹣1.64﹣13.8﹣5.36,(80)2.15+8.73+1.27+7.85 (81)11.87﹣(8.2+1.87),(82)5.42﹣3.87﹣1.13,(83)4.38﹣1.56+0.62﹣0.44,(84)46.7﹣15.03﹣4.97 (85)4.52+0.61+1.39+6.48 (86)4.27﹣(1.96﹣1.73)(87)7.27﹣(1.98+0.27),(89)12.8﹣(4.38+1.614)(90)15.17﹣(3.6+4.9),(91)35.6+(12.6﹣4.4),(92)16.4+3.5+83.6+166.5 (93)4.65﹣2.55﹣1.45,(94)1.28+0.86+38.72,(95)25.74﹣3.57﹣6.43,(96)14.5﹣4.68﹣5.32,(97)0.485+0.64+3.36,

(99)14.02﹣4.5+0.98,

(100)5.76+2.43+0.24+10.57,(101)9.28﹣(3.28+2.55),(102)9.5+4.85﹣6.13,

(103)10.75﹣1.86﹣2.75﹣3.16,(104)1.3+0.94+0.06+7.7,(105)4.45+0.63+5.55,

(106)45.5﹣(0.98+5.5),(107)0.96﹣0.28+0.04﹣0.72,(109)0.6+0.94﹣0.208,

(110)27.73﹣(4.73﹣1.85),(111)3.84+[26.5﹣(20﹣8.6)],(112)7.38﹣5.14+3.62﹣2.86,(113)5.86+13.08﹣9.27,

(114)25.4﹣(15.4﹣6.4),(115)47.23﹣7.23﹣5.89,(116)4.45+0.63+5.55,

(117)5.28﹣(2.9+1.28),

(119)0.96﹣0.28+0.04﹣0.72,(120)9.42+7.39+1.58,(121)18.4﹣1.6﹣5.4,(122)75.7+39.4﹣23.86,(123)21.21+38.38﹣9.79,(124)47.28+1.39+52.72,(125)2.45﹣1.68+1.54,(126)15﹣8.13﹣1.87,(127)5.14+3.225﹣6.302,(129)13.67﹣(5.45+3.67),(130)4.26+5.48﹣1.26+4.52,(131)14.67+25.91+15.33+4.09,(132)10.75﹣(2.4﹣0.86),(133)9.61﹣4.38+0.35,(134)3.87+4.92+1.13,

(135)46.24﹣8.66﹣1.34,(136)21.9﹣9.22﹣0.78+8.1,(137)35.47+39.88﹣12.37,

(139)15.37+28.94+4.63+1.06,(140)42.37﹣(12.37﹣9.78),(141)38.78﹣19.59+41.22﹣30.41,(142)1.9+19.9+199.9+0.3

(143)429+31.1+2.04,

(144)100﹣27.2﹣42.8,

(145)9﹣(3.02+1.25),

(146)1.8﹣1.57+0.2,

(147)5.03﹣2.5+0.96,(149)25﹣4.7+5.3,

(150)1.3+2.83+8.7+0.17,(151)2.47﹣2.2﹣3.8+7.53,(152)6.89+4.7+2.11+5.3,(153)7.46﹣2.37﹣1.63,(154)14﹣(3.65+0.24),(155)70.8﹣1.25﹣1.75,(156)5.81+8.3+4.19+11.7,(157)4.2+7.64+5.8+2.36,

(159)6.8+5.26+3.74+3.2,(160)6.21﹣3.8+2.2,(161)6.03+3.7+2.97,(162)17.43﹣6.57﹣2.43,(163)20.47﹣(1.47+6.8),(164)13.26+4.71+3.47+5.29,(165)22.74+8.68﹣13.74,(166)12.56﹣6.64﹣3.36,(167)45.5﹣(0.98+5.5),(169)15.19+3.36+4.64+4.81,(170)4.7+7.69+5.3+2.31,(171)53.78﹣13.6﹣37.4+6.22,(172)60﹣(21.5﹣8.8)+7.3,(173)9.5+4.85﹣6.13,

(174)75.8﹣(15.3﹣4.8),(175)51.27﹣8.66﹣1.34,(176)28.4﹣3.96﹣1.04+4.6,(177)70.8﹣7.25﹣1.75

(179)794﹣198,

(180)6756﹣193﹣207,(181)0.9+1.08+0.92+0.1,(182)13.59﹣6.91﹣0.09,(183)4.58+3.38+(5.48+6.62)(184)73.75﹣(4.3+8.75)(185)5﹣(4.19﹣2.83),(186)1.39+0.72+0.61+3.28,(187)8﹣3.7﹣6.3,(189)15.37﹣7.59+5.73﹣12.41,(190)11.72﹣7.85﹣(1.26+0.46),(191)15.37+28.44+12.56,

(192)12.64﹣(3.96+4.64),(193)36.26﹣4.78+3.74,

(194)7.34+7.57+12.66+6.43,(195)78.65﹣23.12﹣14.88,(195)4.58+2.39+(5.42+7.61),(196)8.27+5.84+1.73+2.16,

(198)0.09+0.6+5.91+3.4,(199)7.85+6.76+2.15 (200)18.43﹣3.76﹣7.24 (201)21.65+(4.8﹣3.65)(202)9.64﹣(4.64﹣1.23)(203)2.7+17.6+3.3﹣5.6 (204)9.87﹣3.5+2.13﹣8.5 (205)5.64+4.97+0.03,(206)10.93﹣3.74﹣4.26,(208)5.81+8.3+4.19+11.7,(209)3.78﹣1.46+1.54,(210)8.45﹣(5.45+2.98);,(211)3.01+8.2+6.99+1.8,(212)4.3﹣(5.98﹣5.7),(213)5.52﹣0.55﹣0.45,(214)19.6﹣26.72+80.4﹣3.28,(215)27.5﹣10.8﹣0.2,(216)43.5+18﹣13.5,

(218)75.36﹣24.9+24.64﹣25.1,(219)12.56﹣6.64﹣3.36,(220)45.5﹣(0.98+5.5),(221)6+7.94+6.4,

(222)5.41+3.46﹣2.46,

(223)2.03﹣0.18﹣2.82+7.97,(224)10﹣4.44﹣5.56,(225)32.63+7.89﹣6.4,(226)3.97+0.7﹣1.32,(227)30﹣(3.8+0.75),(228)75.6﹣(14.3﹣8.3),

参考答案:

(1)7.4+12.86=20.26;

(2)20﹣5.674=14.326;

(3)141.2﹣48.98=92.22;

(4)102+4.36=106.36;

(5)32.15﹣27.45=4.7;

验算:

(6)12.9+5.01=17.91;

验算:

(7)29.46﹣(9.46+3.8),=29.46﹣9.46﹣3.8,

(8)15.75+0.65﹣2.75+3.35,

=(15.75﹣2.75)+(0.65+3.35),=13+4,

=17;

(9)65.71﹣4.99,

=65.71﹣(5﹣0.01),

=65.71﹣5+0.01,

=60.71+0.01,

=60.72;

(10)12.42+0.48=12.9,

(11)0.56+11.534=12.094,(12)44﹣22.13=21.87,

(13)91﹣22.035=68.965,

(14)52.6+21.237=73.837,

(15)9.15﹣2.18=6.97.

(16)3.85﹣1.5+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)100﹣82.13=17.87

(20)123.56﹣47.9+51.7=127.36

验算:

(21)2.7+3.1+2.9+3.2,

=2.7+(3.1+2.9)+3.2,

=2.7+6+3.2,

=11.9.

(22)28.42+19.48=47.9

验算:

(23)42.56+3.124=45.684

验算:

(24)81﹣30.75=50.25

验算:

(25)15.6十0.237=15.837

验算:

=148.2﹣50,

=98.2.

(27)4.52﹣0.74﹣0.26

=4.52﹣(0.74+0.26)

=4.52﹣1

=3.52;

(28)0.42+5.4+1.58+2.6

=(0.42+1.58)+(5.4+2.6)

=2+8

=10;

(29)5.9+28.65﹣16.57=17.98;

(30)57.5﹣3.25﹣16.75,

=57.5﹣(3.25+16.75),

=57.5﹣20,

=37.5;

(31)6.02+3.6+1.98

=6.02+1.98+3.6,

=8+3.6,

=11.6;

(32)1.29+3.7+2.71+6.3

=(1.29+2.71)+(3.7+6.3),

=4+10,

=14;

(33)3.07﹣0.38﹣1.62

=3.07﹣(0.38+1.62),

=3.07﹣2,

=1.07;

(34)3.25+1.79﹣0.59+1.75

=(3.25+1.75)+(1.79﹣0.59),=5+1.2,

=6.2;

(35)7.5+4.9﹣6.1

=12.4﹣6.1,

=6.3;

(36)14.8+7.9﹣4.8

=14.8﹣4.8+7.9,

=10+7.9

=17.9

(37)2.608+2.84=5.448,

(38)6.07﹣3.869=2.201,

(39)1.5﹣0.306=1.194,

(40)76.8+26.82=103.62,

(41)102.07﹣37.257=64.813,

(42)48.64+18.6=67.24.

(43)54.75﹣5.25﹣14.75,

=54.75﹣(14.75+5.25),

=54.75﹣20,

=34.75;

(44)4.68+14.79+5.32﹣10.79,

=(4.68+5.32)+(14.79﹣10.79),=10+4,

=14;

(45)48.9﹣12.7﹣0.3,

=48.9﹣(12.7+0.3),

=48.9﹣13,

=35.9;

(46)56.4﹣39.7+24.3,

=16.7+24.3,

=41;

(47)3.6﹣2.8+3.4﹣7.2,

=(3.6+13.4)﹣(2.8+7.2),

=17﹣10,

=7;

(48)3.67+18.5+6.33,

=(3.67+6.33)+18.5,

=10+18.5,

=28.5;

(49)120﹣17.83﹣2.17,

=120﹣17.83﹣2.17,

=120﹣(17.83+2.17),

=120﹣20,

=(17.17﹣6.17)﹣(6.8+3.2),=11﹣10,

=1;

(51)73.8﹣1.64﹣13.8﹣5.36 =73.8﹣13.8﹣(1.64+5.36),

=60﹣7,

=53;

(52)6.75﹣(0.9+3.75)

=6.75﹣3.75﹣0.9,

=3﹣0.9,

=2.1;

(53)27.38﹣5.34+2.62﹣4.66 =22.04+2.62﹣4.66,

=24.66﹣4.66,

=20;

(54)35.72﹣4.9﹣(5.72+5.1)=35.72﹣(4.9+5.72+5.1),

=35.72﹣15.72,

=20;

(55)0.73﹣0.25﹣0.73+0.25 =0.75﹣0.75﹣0.25+0.25,

=0﹣0.25+0.25,

=0﹣0,

=0;

(56)5.3+0.1+5.3﹣0.1

=5.3+5.3+0.1﹣0.1,

=10.6+0.1﹣0.1,

=10.7﹣0.1,

=10.6;

(57)12.7﹣4.8﹣5.2.

=12.7﹣(4.8+5.2);

=12.7﹣10,

=2.7.

(58)23.25﹣6.75﹣3.25

=23.25﹣(6.75+3.25),

=23.25﹣10,

=13.25.

(59)4.58+2.39+(5.42+7.61)=(4.58+5.42)+(2.39+7.61)

=10+10,

=20;

(60)9.05﹣3.86﹣3.14,

=9.05﹣(3.86+3.14),

=9.05﹣7,

=2.05;

(61)20﹣9.18﹣0.82,

=20﹣(9.18+0.82),

(62)6.53﹣(1.53+2.6),

=6.53﹣1.53﹣2.6,

=4﹣2.6,

=1.4.

(63)5.52﹣1.074﹣0.926,

=5.52﹣(1.074+0.926),

=5.52﹣2,

=3.52.

(64)4.21+1.04+0.79,

=4.21+0.79+1.04,

=5+1.04,

=6.04

(65)1.36+4.85+2.64+6.15,

=(1.36+2.64)+(4.85+6.15),

=4+11,

=15;

(66)83.7﹣12.83﹣0.17,

=83.7﹣(12.83+0.17),

=83.7﹣13,

=70.7;

(67)4.32+5.43+6.68,

=4.32+6.68+5.43,

=11+5.43,

=16.43;

(68)17.17﹣6.8﹣3.2,

=17.17﹣(6.8+3.2),

=17.17﹣10,

=7.17;

(69)1+12.7+5.9+17.3

=1+(12.7+17.3)+5.9,

=1+30+5.9,

=36.9;

(70)270﹣42.5﹣17.5

=270﹣(42.5+17.5),

=270﹣60,

=210;

(71)15.68﹣(7.78﹣4.32)﹣2.32,

=15.68﹣7.78+4.32﹣2.32,

=(15.68+4.32)﹣(7.78+2.32),

=20﹣10,

=10;

(72)0.9+9.9+99.9+999.9,

=1﹣0.1+10﹣0.1+100﹣0.1+1000﹣0.1,

=(1+10+100+1000)﹣(0.1+0.1+0.1+0.1),=1111﹣0.4,

=1110.6

(73)25.46﹣8.23﹣1.76,

=15.45;

(74)9.4+0.3﹣6.4,

=(9.4﹣6.4)+0.3,

=3+0.3,

=3.3;

(75)15.25+4.72+4.75+5.28,

=(15.25+4.75)+(4.72+5.28),=20+10,

=30;

(76)34.823﹣(4.82+15.2),

=34.823﹣4.82﹣15.2,

=30.003﹣15.2,

=14.803;

(77)12.7﹣4.8﹣5.2,

=12.7﹣(4.8+5.2),

=12.7﹣10,

=2.7;

(78)3.1+25.78+6.9,

=(3.1+6.9)+25.78,

=10+25.78,

=35.78;

(79)73.8﹣1.64﹣13.8﹣5.36,=(73.8﹣13.8)﹣(1.64+5.36),=60﹣7,

=53

(80)2.15+8.73+1.27+7.85

=(2.15+7.85)+(8.73+1.27),=10+10,

=20;

(81)11.87﹣(8.2+1.87),

=11.87﹣1.87﹣8.2,

=10﹣8.2,

=1.8;

(82)5.42﹣3.87﹣1.13,

=5.42﹣5,

=0.42;

(83)4.38﹣1.56+0.62﹣0.44,

=(4.38+0.62)﹣(1.56+0.44),=5﹣2,

=3;

(84)46.7﹣15.03﹣4.97

=46.7﹣(15.03+4.97),

=46.7﹣20,

=26.7;

(85)4.52+0.61+1.39+6.48

=(4.52+6.48)+(0.61+1.39),=11+2,

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