小数四则混合运算专项练习题有答案

小数混合运算专项练习276题（有）(1)0.11X1.8+8.2X0.11(42)0.25X3.2X1.25(84)6.48-3.2-2.5(2)2.34X99+2.34(43)9.99X1.01(85)1.2X7.6+7.6X6.8.(3)5.4-2.7X0.8(44)4.63X1.4+46.3X0.86(86)(9.4-5.8)X2.07(4)132X101(45)17.5-0.8-12.5(87)12.54-4.56-3.44-1.54(5)6.25-1.25-0.8(46)0.9+9.9+99.9+999.9.(88)(9.36X5+9.36+9.36X(6)2.5X16.(47)2.9X99+2.9X1.252)(7)6.33X101-6.33(48)25X11.2X4(89)7.236-0.18-14.3X0.02.(49)23.25-6.75-3.25.(90)9.6-0.4X0.25(8)1.56X1.7+0.44X1.7(50)125X3.2X2.5(91)29.7-(5.85-0.65)(9)1.8X[(3.41-2.9)-(51)3.6X10.1(92)7.4X9.90.03](52)5.8X2.7+0.58X73(93)3.84-2.7X0.64(10)0.125X32X2.5.(53)3.6+6.4X1.8(94)8.68-8.68-0.56X0.5(11)1.258X18.5-0.258X(54)(1.48+3.02)-(3.6X(95)4.7X4.7+4.7+4.3X4.7.18.0.5)(96)2.72-[(8.2-6.5)X(125)8.48-0.8X0.9(55)(36.7-4.9)X101-0.5];31.8.(13)1.25X2.4(56)6.33X101-6.33(97)9.12+9.12X9-60.2;(14)5.85-(1.3+0.5)X6.(57)35.6-5X1.73(98)28.4-0.4-0.25;(15)17.17-6.8-3.2-6.17(58)1.6X55.4-55.4X0.6(99)27.36-27.36-7.6.(59)17.68-5.2+2.7X1.5.(100)3.25X0.45+6.75X0.45(16)5.4X[(1.3+2.15)-0.2](60)1.08X0.8-0.27(101)31.5-24.5-3.5(61)102X0.45(102)7.5X102(17)8.4-0.6+8.4-0.4(62)22.78-1.25-0.8(103)6.3+3.7X2.8.(18)16.8X10.1(63)0.34X101-0.34.(104)2.15+8.73+1.27+7.85(19)10.9-0.9-0.2+1.8(64)0.125X32X2.5(105)11.87-(8.2+1.87)(20)1.25X3.2X0.25.(65)0.8X6.3-0.8X3.8(106)5.42-3.87-1.13(21)1.36+4.85+2.64+6.15(66)504-3.2X2.08(107)4.38-1.56+0.62-0.44(22)98.5-2.5-4(67)(20-0.8X9)X5.7(108)0.4X270X2.(23)5.4-[2.5X(3.7-2.9)](68)2.4X1.5+3.6-1.5(109)(40+1.25)X8(24)0.8X(4-3.68)-0.01(69)7.38-5.14+3.62-2.86(110)(12.5-0.05)X8(25)83.7-12.83-0.17(70)0.12X1.8+8.2X0.12(111)2.6X8.5+8.5X7.4(26)5.96+13X(3.2-3.12)(71)5.4-[0.51-(1.2-1.03)](112)9.9X6.9-6.9X3.9(27)4.32-2.4X1.7;(72)[(8.1-5.6)X0.9-1.05](113)5.6X99+5.6(28)16.2X4.5+3.8X4.5;-0.04.(114)2.5X(1.9+1.9+1.9+1.9)(29)9.05-3.86-3.14;(73)10.8-0.8-(0.35+0.05)(30)7.28+0.72-0.9.(115)7.2-1.25-8.(31)4.32+5.43+6.68(74)8X[1-(2.3-2.25)](116)52.4-(15+0.6)-1.6(32)17.17-6.8-3.2(75)2.64X9.9+0.264(117)9.87X99+9.87(33)5.29X9+5.29(76)4.52+0.61+1.39+6.48(118)46.8-0.9-0.4(34)16.8X10.1(77)4.27-(1.96-1.73)(119)5.5X17.3+6.7X5.5.(35)2.74X9.5+5X0.274(78)(294.4-19.2X6)-(120)99X4.2+4.2(36)0.36+9.6-3.2.(6+8)(121)0.25X1.25X3.2(37)3.75X25+6.25X25(79)12.5X0.76X0.4X8X(122)6.4X14+15X6.4+6.4(38)25.46-8.23-1.762.5(123)(1.3+1.3X0.125X8)-(39)2.9+7.1X10(80)4.98+8.02X2.5(80-77.4)(40)1.25X32X0.25.(81)60.8-40.8-2.5(124)4X(25+2.5+0.25)-111(41)15.68-(7.78-4.32)-(82)0.8X69.6X12.52.3(83)4.98X99+4.92(125)6.25十〔(17.2-3.6X4.5)(166)(0.4+40)X2.5(207)15.02-6.8--0.32〕(167)78.7-17.7X3.6(1.02+1.2)(126)28.4X99+28.4(168)18-[0.3X(8-6.5)](208)0.6X[(5-0.68)-1.2](127)0.94X2.5-0.45(209)2.7-4+6.3X0.25(128)4X0.8X12.5X2.5(169)12.7+12.5+0.5.(210)(6.02+2.8)-0.4-(129)17.5-0.25X17+13.(170)91-2.6-0.05=2.05(130)10.1X87(171)6.3X3.7+6.3X6.3=(211)3.08X3.5+6.2X(131)2.3+3.19-(22-19.8)(172)(3.7+1.7X0.4)-2.5=3.08+3.08X0.3.(173)7.28+3.2-2.5=(212)2.3+3.91-(22-19.7)(132)1.25X7.2.(174)0.74+0.9X7.4=(133)9.1-1.2-6-6.24(175)7.8-0.125-0.8=(213)21.6-[64.8-(48.6-(134)7.3+12.8-3.8X2.3(176)37.5-[0.3X(1.34-X22.7)].(135)(5.36+7.64)-13X1000.84)](214)93.6X3.6+1.4X3.6(177)(2.5+27.75-1.5)X(215)0.25X0.8X0.125X(136)7.575-[(5.63-1.88)X1.6.(216)0.42.7X1.5-2.70.2(178)6.21-3.8+2.2(217)9.08+5.45+11.92+4.55(137)]7.5-(5.5+1.24)(179)6.03+3.7+2.97(218)1.25X30X1.2X0.8.(138)0.26+15.68+9.74+2.32(180)17.43-6.57-2.43(219)0.6+0.94-0.208(139)13.26+9.55-3.26(181)20.47-(1.47+6.8)(220)4.85X1.25X8(140)6.1+3.9-6.1+3.9.(182)13.26+4.71+3.47+5.29(221)(64-22.4-1.4)X1.2(141)31.7-0.63(保留2位小(183)22.74+8.68-13.74.(222)18.3-6.25-3.75数(184)10-0.2-2.5(223)2.8X3.6+1.4X2.8(142)）2.4X1.5+3.6-1.5(185)64X4.5+3.6X45(224)6.6-〔14.5-(1.7+1.8)〕(143)0.32X0.25+0.08-4(186)1.25X3.2X0.8(225)0.25X9.87X4(144)(9.6+1.48-3.7)-8(187)14.5X102(226)36.7X2.1+10.8(145)5.8-[4X(1.34-0.14)](188)14.64+3.7X2.8(227)8.45-0.45X0.1(146)5.4-[0.51-(1.2-(189)8.4—0.21—0.5.(228)0.73X1021.03)].(229)7.8X5.6+2.3X4.4(147)21.35-3.25-16.75(190)0.125X9X8X0.3(230)76.3X27-76.3X17.(148)33.02-(148.4-90.85)(191)4.62-5-0.66(231)7.05X23.7+7.05X-2.5(192)5.78X2.3+5.78+5.78X6.7(232)76.3[(7.6.-5.2)-0.4+2.54](149)32X2.5X0.125X32.(150)18.1+(3-0.299-0.23)(193)7.75X[20-(3.24-(233)17.68-5.2+2.7X1.5X1.3.04)].(234)35.6-5X1.73(151)67-(2.98+0.67)(194)1.25X0.5X8X0.2(235)(1.1-0.78)X(2.7-(152)8X16-73.8X6(195)0.97X9+0.971.95)(153)(45+14)-73+710.(196)5.4-[3X(3.8-2.9)].(236)1.3X0.75X4(154)13.7X0.125X8(197)0.4X(3.2-0.8)-0.15(237)1.08-1.8X1.2(155)0.8X[13-(3.12+5.28)](198)5.7+1.9X0.2-7.6(238)50.4X1.9-1.8(156)102X0.56(199)32.4X6.3+32.4X3.7(239)0.82X0.25+1.18X0.25.(157)1.53X1.7+0.47X1.7.(200)18.2-10.6X(0.9-(240)8.5X[(2.36+2.42)-0.25](158)5.18+0.73+0.820.75)(159)0.75X1.8-1.5(201)0.25X3.85X40(241)3.9-[(1.3+0.6)X6-3.6](160)12.5X7.1X0.8(202)1.46X3.5+3.5X4.54.(161)6.12X99+6.12(203)7X12.5X0.8(242)4.25X6.3+3.7X4.25(162)8.6-0.86+8X0.35(204)4.7X3.6+4.7X6.4(243)205X0.99(163)5.6X(18.5-8.5-0.5)(205)1.45X[(2.8+4.4)-(244)25.6-7.49-2.512.4].(164)0.125X4.78X80(206)4.2X(6.18-3.03)+6.3(245)[2.5-(6.8-4.9)]X0.8.(165)2.8X3.6+1.4X2.8(246)102X4.5(247)3.4-[(1.2+0.5)X5](259)50.4-3.2X2.08(270)25.92+(10.1-14.5X(248)8X(20-1.25)(260)204-(3.4X0.5)0.2)(249)0.654+10.9X6.5(261)(43.26+2.34)-7.5(271)0.487X12.5-48.7(250)22.7X1.25X0.8(262)(20-0.8X9)X5.7.(272)(8.16+2.09)-[(10.3(251)3.91X2.8+6.09X2.8.(263)13.25-0.8+1.75-1.2;—9.3)-0.4].(252)6.23+3.09=(264)2.5X99+2.5;(273)1.56X1.7+0.44X1.7(253)132.4-59.8=(265)10.36+4.8-16.5—5;(274)12.5X(7.2-1.9)X0.8(254)6.62X0.84=(266)12.5X2.4.(255)2.07-0.023=(267)38.78-19.59+41.22-(275)0.25X2010+20.10X75(256)[20.026-(8.6+9.7)X30.41(276)30.8-[(6.34-4.59)X4]0.92]-30.19.(268)2.74X4.86+4.86X(257)0.125X32X2.56.26+4.86(258)0.8X6.3-0.8X3.8(269)0.08X(12.5+2.5)X0.1