北师大版小学数学去括号练习400题及答案

北师大版小学数学去括号练习400题及答案

(1)22.01-(11.01+8.48)=(11)(1.86-1.4232)4-0.12

(2)[7-(2.8+4)]X4.3(12)43X(364-18+2)

(3)[12.66+(1.5-6)]+3.4(13)116+(1648+312)4-49

(4)(2.31+48.984)+4.98(14)[7.46-(2.9-9.3)]4-9.9

(5)(98+6884-43)X40(15)6804-(19+49)

(6)[7-(0.6+2.8)]X5.1(16)6724-(11+10)

⑺29.21—(12.21—2.86)=(17)[34+(75-60)]X27

(8)155-(331-49)4-94(18)2054-(17.54-7.73)=

(9)(2234-974)+90(19)12.27-(6.27-7.84)=

(10)[3.8-(5.7-7.1)]X9.3(20)44.07—(10.07+5.8)=

笫1页共23页

(21)(7.5-3.1)X5.4(32)46.77—(16.77+2.96)=

(22)(21+111)4-12(33)2434-(657-14X45)

(23)5X(1324-33+3)(34)18X((966-42)4-42]

(24)68-(78+60)+23(35)43.99-(14.99-4.13)=

(25)[17.86+(2.1—2.5)]^-9.7(36)(281+31)+39

(26)15X(22—468+39)(37)29X(73+110+22)

(27)[12.34—(6.6—5.3)]+2.4(38)(1.7+7.8)X8.1

(28)[4.4+(4.2-0.5)]X5.9(39)197-(1692-404)4-28

(29)1566+54+78X96(40)39X(9.4-04)

(30)(115+28)4-13(41)|61+(1.5-9.1)K8.9

(31)55+(428+1130)4-38(42)[7.4—(3.5—3.4)]X8.8

笫2页共23页

(43)|4.2-(1.5-5.4)]X0.2(54)62+(1383+1884)+99

(44)(51-584-29)X17(55)[2.5-(6.3-9.5)]X5.8

(45)[82-(29+29)]X25(56)57.84-(10.2+6.8)

(46)[2.98-<3.7-4.5)]4-0.6(57)1244-(63-32)

(47)[3.1+(0.8-3.6)]X2.5(58)(13X12+228)+24

(48)28X(8.3+32)(59)8X(62+4254-17)

(49)[9.7+(4.5-6.7)]X8.5(60)83X(3.8+9.7)

(50)686+(34.3X8)=(61)[3.3+(5.2—4.9)]+1.2

(51)20X((463+12)4-25](62)[639+(1-2.1)]-r2.3

(52)76-(1045-205)4-84(63)724-(224-59)

(53)17X(25—138・23)(64)(7804-30-23)X41

第3页共23页

(65)120.08-(2.3-1.3)]4-3.6(76)(14X10+2178)4-38

(66)(65-84+42)X16(77)(76-48)X(11704-30)

(67)(75-4144-18)X13(78)(1.2+4)X2.8

(68)(75-3914-23)X31(79)[20.92+(1.4-1)]4-2.6

(69)48X((227+20)-M3](80)(1924.484-30)X43

(70)(984-2644-44)X16(81)80-(217+684)4-53

(71)(16+195.2)4-4.8(82)(96-84)X(6674-23)

(72)95.58+(14.3—2.5)(83)756-(556+22)

(73)21X(7604-38+6)(84)75.244-(14.2-4.3)

(74)744-(244-132)(85)[14-(98-97)]X15

(75)844-(8.4X8)=(86)150+(130+30)+32

第4页共23页

(87)(1.96+1162.91)4-30.1(98)(54-29)X(16924-36)

(88)8X(49-8284-36)(99)2X36-(84-12)

(89)[76.84-(4.9+8.7)]+9.3(100)32X(79+10804-36)

(90)5X(1754-35+2)(101)0.0284-(0.28X4)=

(91)18X(588+49+4)(102)(7.5+8.1)X7

(92)22.5-(3.54-0.49)=(103)2.9X(5.3+0.8)

(93)(1.2+9.5)X1.6(104)(54-5604-35)X10

(94)(43+7.1)X51(105)23X(20+514-17)

(95)[6.9+(7.8-2)]X9.3(106)36X(5.7+52)

(96)4416+(46+46)(107)41.81-(7.81-7.24)=

(97)(15+914-13)X6(108)(25.8+7.8)+0.6X5.1

第5页共23页

(109)|16.13-(3.4+2.2)]4-2.7(120)(16.7+176.34)4-12.7

(110)(8.51-1-2.5)-9.9X0.5(121)539-(439+40)

(111)27204-(47+38)(122)[74+(90-89)1X18

(112)(91-804-40)X29(123)47X11-(81-41)

(113)484-(384-176)(124)[8.6-<7.3-8.8)]X4.6

(114)(3154-21-15)X10(125)2.254-(0.2+2.3)

(115)622—(222+256)(126)66X(5.5-54)

(116)(266-29)4-79(127)(34X46-1452)4-16

(117)(4564-19-16)X17(128)33X(43+9.5)

(118)14.37—(7.37+4.63)=(129)119.044-(18.1-5.3)

(119)(9224-310)4-88(130)[37.66-(9.9-8.5)14-9.8

第6页共23页

(131)(9.1+1.775)4-12.5(142)(71.4+9.9)—6X3.7

(132)[20.96-(3+4.1)]4-1.4(143)93X(93+4.2)

(133)32X(9.4-7)(144)692—(392—21)

(134)(3.8-1.4)X2.6(145)6304-(970-20X47)

(135)(40X35-1139)^-29(146)(935-200)+49

(136)[7.7+(8.1-5.4)]X1.5(147)871-(771-165)

(137)684+(35X21—699)(148)722-(422-109)

(138)137—(626+823)+69(149)(6.7—56)X8.8

(139)41.11-(12.11-9.23)=(150)49.16-(9.16-5.21)=

(140)(10664-41-4)X28(151)22X(7.2+63)

(141)1.9X(6.34-83)(152)[2.4—(9.5—7.3)]X0.2

第7页共23页

(153)13X(92-3924-14)(164)13.79+(13.4+6.3)

(154)45.55—(6.55+4.61)=(165)3.94-(8.3-0.5)

(155)(11-364-18)X23(166)29X(5524-46+2)

(156)707-(2074-100)(167)(79-21)X(13804-30)

(157)12584-(14X23-285)(168)(2089-740)-5-71

(158)(1.77-1.4082)4-1.34(169)[8.5—(6.6—2.9)]+4.8

(159)50X(84-3644-28)(170)752-(252-70)

(160)121.8^-(7.14-1.6)(171)[11.14-(2.5-4)]^-1.6

(161)[88-(38+45)]X23(172)128+(36+216)4-21

(162)[45.02-(6.5+2)14-8.3(173)625-(325-63)

(163)49.95—(15.95—3.4)=(174)|4.98+(3.4-5.5)]4-0.4

第8页共23页

(175)734+(3.67X8)=(186)7004-(75-25)

(176)41X((874+25)4-31](187)(4804-24-13)X8

(177)(38+7004-35)X28(188)(42.8-41.491)4-0.07

(178)13604-(49+19)(189)[9.7-<3.9-7.4)]4-2.2

(179)[13.15-(0.7+9)]^-0.5(190)40.7+(40.7X8)=

(180)(33X50-1170)4-16(191)(24.9-5.1)+8.1X1.8

(⑻)(497+283)+78(192)13924-(1287-37X34)

(182)2726+(15+43)(193)5.7X(7.24-9.8)

(183)(10—81+27)X28(194)161+(861-367)4-13

(184)[36.49—(7.6+4.8)]+3.3(195)(78—208+26)X50

(185)(1.8+486.72)4-23.6(196)16.19-(3.19-6.95)=

笫9页共23页

(197)298.84-(16.9+8)(208)27X(378+21+11)

(198)2.3X(7.5—3.4)(209)34X(84+12—7)

(199)12X(5254-21-12)(210)74-(49+131)4-12

(200)(864-288)4-48(211)(2.37+6.9)-2.7X0.4

(201)186-(3805-1348)4-91(212)25X(252-12-15)

(202)[84-(43+38)]X42(213)(19X25+2098)4-31

(203)7X(208+26+4)(214)81.484-(19.4+9.7)

(204)[9.4+(6.5-8.2)]X8(215)[33.5-(4+2.2)]4-7.8

(205)40.57-(4.57+3.16)=(216)14.08-(3.08+4.73)=

(206)36.76—(11.76—6.52)=(217)378.34-(0.2+9.5)

(207)15.91-(2.91-9.78)=(218)(39X38+1252)4-10

第io页共23页

(219)50X[(368+17)4-35](230)39X(14404-48+13)

(220)[78+(47—33)]X29(231)148+(1476-524)4-34

(221)34.69—(1.69—7.62)=(232)35.3-(17.3-4.88)=

(222)[6.9-(0.8-6.7)]X2(233)2.7X(3.1+4)

(223)41-(4.1X2)=(234)8.5X(5.94-4.2)

(224)26X(1614-234-3)(235)(15X20+1716)4-28

(225)(26-8614-41)X23(236)[74-(63-6.4)]X7.5

(226)38X(98—494+19)(237)(85-44)+32X33

(227)[93.6+(2.1-7.5)]4-9(238)20.56-(17.56-7.18)=

(228)23.042(4.3+5.3)(239)50.89—(19.89—5.32)=

(229)159—(1272+1084)+62(240)40.82—(18.82—9.29)=

第11页共23页

(241)32.05一(20.05+10.44)=(252)(28X19+3369)4-47

(242)45.33—(9.33—3.73)=(253)34.42—(5.42—9.79)=

(243)38.06-(19.06-6.8)=(254)[50-(98-60)]X33

(244)129-(5514-527)4-77(255)85.264-(11.2-1.4)

(245)29X(216^-27-7)(256)47.57-(11.57+0.22)=

(246)(10X25-115)4-27(257)(97-6464-34)X47

(247)18924-(44X46-1981)(258)478-(378-119)

(248)[80-(13+24)]X12(259)(663+39+46)X35

(249)(568-239)4-47(260)25004-(15+35)

(250)(9.7-9.6)X31(261)(3214-130)4-41

(251)22X31—(52—20)(262)(26.8+594.23)4-12.7

第12页共23页

(263)693+(6+9.4)(274)3484-(40-28)

(264)(5.1+1.9)X68(275)|19.56-(7.8+7.2)]4-2.4

(265)[14.44-(4.8-6.2)]4-1.8(276)[67-(85-79)]X47

(266)(58+3684-16)X16(277)[95-(17+30)]X16

(267)411-(211-1)(278)142.8^-(10.7-3.9)

(268)3994-(50X18-881)(279)50.74-(6.74-4.86)=

(269)[70-(20+26)]X24(280)(44.7-37.8609)4-4.59

(270)(2164-24-9)X35(281)(97-10294-49)X37

(271)8.2+(4.1X4)=(282)[82-(39+39)]X46

(272)18.554-(4.3+1)(283)(16.1+4.8)-7.9X0.9

(273)45.22—(16.22+2.51)=(284)(317-35)4-47

第13页共23页

(285)|100-(45+47)|X38(296)22-(361-37)4-36

(286)154+(1739+1008)4-67(297)136-(94+92)+31

(287)(4.03+80.1户35.8(298)(2478-974)4-94

(288)890+(4.45X2)=(299)37.29—(7.29—9.04)=

(289)40.3-(11.3+5.93)=(300)409.6^(9.6-3.2)

(290)889-(689-97)(301)522-(222-65)

(291)(7564-27+98)X50(302)[86-(44+32)]Xll

(292)(145—28)+39(303)[4.2+(3.8-1.7)]X3.6

(293)(7.6+3.8)X9.3(304)155.94+(17.7+4.9)

(294)7X(222+37+6)(305)45X(3154-35-7)

(295)(124+44)+21(306)[52.9+(2.8-9.5)14-8.4

第14页共23页

(307)27.06-(3.06+3.92)=(318)164+(354+414)4-16

(308)15.05-(5.05+8.37)=(319)|1.2+(9.8-1.2)]X9.2

(309)280.8+(8.6—3.4)(320)866-(666-84)

(310)(4.67+111.91)4-40.2(321)(644-32-2)X24

(311)[12.2+(0.2-5.4)]^-2.8(322)113.36+(12+9.8)

(312)23X(39+418+19)(323)[51.37+(1-9.3)]4-7.3

(313)4404-(61-21)(324)3404-(1098-47X23)

(314)38704-(38.7X2)=(325)(44-1092-?39)X41

(315)19.1-(1.1-0.61)=(326)[5.3+(9.8-5.3)]X6.5

(316)l2X|(l92-42)4-30|(327)(40.7-40.122)4-2.89

(317)(34.3-6.636)4-18.2(328)16X(95-3204-40)

第15页共23页

(329)15X(75-10644-38)(340)(6.17-1.5)4-3.2X0.8

(330)769-(369+269)(341)21.28—(17.28+2.09)=

(331)[4.57+(7.2-5.2)]4-7.3(342)175-(2862+193)4-65

(332)(5.42-5.2)4-5.9X4(343)761-(6614-21)

(333)(931+330)+97(344)4.5X(2+3.3)

(334)23.01-(8.01-7.63)=(345)162+(616+224)+24

(335)[14.18+(9.3-2.2)]4-3.8(346)3X23+(50—20)

(336)113-(580+381)4-31(347)157+(1.57X2)=

(337)(4.8+2.1)X7.7(348)(76-49)+25X49

(338)38.54-(18-2.6)(349)(3364-14-15)X2I

(339)498-(98+230)(350)(58.6-6.3)—1.4X2

第16页共23页

(351)(7.7-7.682)4-0.03(362)113-(0.4-5.9)]X1.9

(352)28+(6.3—5.5)(363)45X[(91+28)+17]

(353)15X(3064-17-4)(364)(83-72)X(4204-42)

(354)48X(44—44・22)(365)192-(1599+249)4-66

(355)[9.9-<2.9-6)]X7.1(366)158-(1686+36)+41

(356)3330+(47+27)(367)[56.14-(2.5+2.6)]4-5.8

(357)26X20-(67-50)(368)[99-(49+47)]X41

(358)[9.94+(0.6-i.8)]4-2.3(369)45.6—(14.6+3.28)=

(359)(41-11)X(10364-28)(370)2769+(45+26)

(360)12064-(49+18)(371)|21.76-<9.6-5)]4-4.4

(361)12.12-(4.12-8.07)=(372)(65-60)X(16104-35)

第0页共23页

(373)808-(408-67)(384)72-(2031+1299)4-74

(374)466-(166-45)(385)(81-6724-24)X12

(375)31.12-(17.12-5.36)=(386)(35X31+801)4-46

(376)0.724-<0.72X4)=(387)[3.6-(7.1-7.8)]X8.7

(377)1558^-(88-50)(388)23.92。(4.2+0.4)

(378)(28-5324-28)X29(389)299.22(15.8+1.8)

(379)526-(26+262)(390)(32X35-840)4-40

(380)(39+109)4-37(391)(99-97)X(700^-28)

(381)14X(95+8994-31)(392)[7.2-(5.1-4)]X7.5

(382)34.08—(1.08-9.6)=(393)25+(2255—668)+69

(383)(50X50—2228)+16(394)462+(59—37)

第18页共23页

(395)66.03+(1.1+6)(398)(79-73)X(4164-26)

(396)10014-(46+45)(399)665-(465+33)

(397)(78-20)X(3744-17)(400)[63+(62-29)]X47

第19页共23页

北师大版小学数学去括号练习400题答案

(1)2.52(21)23.76(41)6(61)3(81)63

⑵0.86(22)11(42)64.24(62)2.3(82)348

⑶2.4(23)35(43)1.62(63)559(83)178

(4)10.3(24)62(44)833(64)123(84)7.6

⑸4560(25)1.8(45)600(65)5.3(85)195

(6)18.36(26)150(46)6.3(66)1008(86)155

⑺19.86(27)4.6(47)0.75(67)676(87)38.7

(8)152(28)47.79(48)322(68)1798(88)208

⑼14(29)7517(49)63.75(69)912(89)6.8

(10)48.36(30)11(50)2.5(70)1664(90)35

(11)3.64(31)96(51)380(71)44(91)288

(12)172(32)27.04(52)66(72)8.1(92)18.51

(13)156(33)9(53)323(73)546(93)17.12

(14)1.4(34)396(54)95(74)632(94)581.4

(15)10(35)33.13(55)33.06(75)1.25(95)118.11

(16)32(36)8(56)3.4(76)61(96)48

(17)1323(37)2262(57)4(77)1092(97)132

(18)10.73(38)76.95(58)16(78)14.56(98)1175

(19)13.84(39)151(59)696(79)8.2(99)0

(20)28.2(40)351(60)1120.5(80)1462(100)3488

第20页共23页

(101)0.025(122)1350(143)125.55(164)0.7(185)20.7

(102)109.2(123)477(144)321(165)0.5(186)14

(103)17.69(124)46.46(145)21(166)406(187)56

(104)380(125)0.9(146)15(167)2668(188)18.7

(105)529(126)6.6(147)265(168)19(189)6

(106)392.4(127)7(148)409(169)1(190)0.125

(107)41.24(128)45.54(149)9.68(170)570(191)34.38

(108)36.66(129)9.3(150)45.21(171)7.9(192)48

(109)3.9(130)3.7(151)297(172)140(193)96.9

(110)6.06(131)0.87(152)0.04(173)363(194)199

(111)32(132)9.9(153)832(174)7.2(195)3500

(112)2581(133)76.8(154)34.39(175)25(196)19.95

(113)276(134)6.24(155)207(176)1189(197)12

(114)0(135)9(156)400(177)1624(198)9.43

(115)144(136)15.6(157)34(178)20(199)156

(116)3(137)19(158)0.27(179)6.9(200)12

(117)136(138)116(159)3550(180)30(201)159

(118)2.37(139)38.23(160)14(181)10(202)126

(119)14(140)616(161)115(182)47(203)84

(120)15.2(141)27.74(162)4.4(183)196(204)61.6

(121)60(142)59.1(163)37.4(184)7.3(205)32.84

第21页共23页

(206)31.52(227)9.8(248)516(269)576(290)297

(207)22.78(228)2.4(249)7(270)0(291)6300

(208)783(229)121(250)3.1(271)0.5(292)3

(209)0(230)1677(251)650(272)3.5(293)106.02

(210)59(231)176(252)83(273)26.49(294)84

(211)8.19(232)22.88(253)38.79(274)29(295)8

(212)150(233)19.17(254)396(275)1.9(296)13

(213)83(234)85.85(255)8.7(276)2867(297)130

(214)2.8(235)72(256)35.78(277)768(298)16

(215)3.5(236)51.75(257)3666(278)21(299)39.04

(216)6.27(237)1097(258)219(279)48.86(300)64

(217)39(238)10.18(259)2205(280)1.49(301)365

(218)23(239)36.32(260)50(281)2812(302)110

(219)550(240)31.29(261)11(282)184(303)