小數(shù)四則混合運(yùn)算專(zhuān)項(xiàng)練習(xí)題能簡(jiǎn)便的要簡(jiǎn)便)

1、小數(shù)混合運(yùn)算專(zhuān)項(xiàng)練習(xí)276 題（能簡(jiǎn)便的要簡(jiǎn)便運(yùn)算）(1)0.11X1.8+8.2X0.11(13)1.25X2.4(2)2.34X99+2.34(14)5.85-(1.3+0.5)X6.(3)5.4-2.7X0.8(15)17.17-6.8-3.2-6.17(4)132X101(16)5.4X(1.3+2.15)-0.2(5)6.25-1.25-0.8(17)8.4-0.6+8.4-0.4(6)2.5X16.(18)16.8X10.1(7)6.33X101-6.33(19)10.9-0.9-0.2+1.8(8)1.56X1.7+0.44X1.7(20)1.25X3.2X0.25.(9)1.8

2、X(3.41-2.9)-0.03(21)1.36+4.85+2.64+6.15(10)0.125X32X2.5.(22)98.5-2.5-4(11)1.258X18.5-0.258X18.5(23)5.4-2.5X(3.7-2.9)(12)8.48-0.8X0.9(24)0.8X(4-3.68)-0.0183.7-12.83-0.17(38)25.46-8.23-1.765.96+13X(3.2-3.12)(39)2.9+7.1X104.32-2.4X1.7;(40)1.25X32X0.25.16.2X4.5+3.8X4.5;(41)15.68-(7.78-4.32)-2.329.05-3.8

3、6-3.14;(42)0.25X3.2X1.257.28+0.72-0.9(43)9.99X1.014.32+5.43+6.68(44)4.63X1.4+46.3X0.8617.17-6.8-3.2(45)17.5-0.8-12.55.29X9+5.29(46)0.9+9.9+99.9+999.9.16.8X10.1(47)2.9X99+2.92.74X9.5+5X0.274(48)25X11.2X40.36+9.6-3.2.(49)23.25-6.75-3.25.3.75X25+6.25X25(50)125X3.2X2.5(25)(26)(27)(28)(29)(30)(31)(32)(33

4、)(34)(35)(36)(37)3.6X10.1(64)0.125X32X2.55.8X2.7+0.58X73(65)0.8X6.3-0.8X3.83.6+6.4X1.8(66)504-3.2X2.08(1.48+3.02)-(3.6X0.5)(67)(20-0.8X9)X5.7(36.7-4.9)X101-31.8.(68)2.4X1.5+3.6-1.56.33X101-6.33(69)7.38-5.14+3.62-2.8635.6-5X1.73(70)0.12X1.8+8.2X0.121.6X55.4-55.4X0.6(71)5.4-0.51-(1.2-1.03)17.68-5.2+2.

5、7X1.5.(72)(8.1-5.6)X0.9-1.05-0.041.08X0.8-0.27(73)10.8-0.8-(0.35+0.05)102X0.45(74)8X1-(2.3-2.25)22.78-1.25-0.8(75)2.64X9.9+0.2640.34X101-0.34.(76)4.52+0.61+1.39+6.48(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)4.27-(1.96-1.73)(90)9.6-0.4X0.25(294.4-19.2 X 6)-(6+8)(91)29.7-(5.85-0.65)12.5X0.76

6、X0.4X8X2.5.(92)7.4X9.94.98+8.02X2.5(93)3.84-2.7X0.6460.8-40.8-2.5(94)8.68-8.68-0.56X0.50.8X69.6X12.5(95)4.7X4.7+4.7+4.3X4.7.4.98X99+4.9(96)2.72-(8.2-6.5)X0.5;6.48-3.2-2.5(97)9.12+9.12X9-60.2;1.2X7.6+7.6X6.8.(98)28.4-0.4-0.25;(9.4-5.8)X2.07(99)27.36-27.36-7.6.12.54-4.56-3.44-1.54(100)3.25X0.45+6.75X0

7、.45(9.36X5+9.36+9.36X2) X1.25(101)31.5-24.5-3.57.236-0.18-14.3X0.02.(102)7.5X102(77)(78)(79)(80)(81)(82)(83)(84)(85)(86)(87)(88)(89)(103)6.3+3.7X2.8.(116)52.4-(15+0.6) -1.6(104)2.15+8.73+1.27+7.85(117)9.87X99+9.87(105)11.87-(8.2+1.87)(118)46.8-0.9-0.4(106)5.42-3.87-1.13(119)5.5X17.3+6.7X5.5.(107)4.3

8、8-1.56+0.62-0.44(120)99X4.2+4.2(108)0.4X270X2.(121)0.25X1.25X3.2(109)(40+1.25) X8(122)6.4X14+15X6.4+6.4(110)(12.5-0.05)X8(123)(1.3+1.3X0.125X8)-(80-77.4)(111)2.6X8.5+8.5X7.4(124)4X(25+2.5+0.25) -111(112)9.9X6.9-6.9X3.9(125)6.25-( 17.2-3.6X4.5)-0.32(113)5.6X99+5.6(126)28.4X99+28.4(114)2.5X(1.9+1.9+1.

9、9+1.9)(127)0.94X2.5-0.45(115)7.2-1.25-8.(128)4X0.8X12.5X2.57.575-(5.63-1.88)X0.2.31.7 - 0.63 (保留 2 位小數(shù))(154)13.7X0.125X817.5-0.25X17+13.(142)2.4X1.5+3.6-1.510.1X872.3+3.19 -( 22 - 19.8)1.25X7.2.9.1 - 1.2-6 - 6.247.3+12.8-3.8X2.3(5.36+7.64) -13X100(143)0.32X0.25+0.08-4(144)( 9.6+1.48 - 3.7 )- 8(145)5

10、.8-4X(1.34-0.14)(146) 5.4 - 0.51 -( 1.2 - 1.03 ).(147)21.35 - 3.25 - 16.75(148)33.02 -( 148.4 - 90.85 )- 2.5(129)(130)(131)(132)(133)(134)(135)(136)(137)(138)(139)(140)(141)7.5-( 5.5+1.24)(150)18.1+(3-0.299-0.23)X1.0.26+15.68+9.74+2.32(151)67-( 2.98+0.67 )13.26+9.55 - 3.26(152)8X16-73.8X66.1+3.9 - 6

11、.1+3.9.(153)(45+14)- 73+710.(149)32X2.5X0.125(155)0.8X13-(3.12+5.28)(168)18-0.3X(8-6.5)(156)102X0.56(169)12.7+12.5+0.5.(157)1.53X1.7+0.47X1.7.(170)91-2.6-0.05=(158)5.18+0.73+0.82(171)6.3X3.7+6.3X6.3=(159)0.75X1.8-1.5(172)(3.7+1.7X0.4)-2.5=(160)12.5X7.1X0.8(173)7.28+3.2-2.5=(161)6.12X99+6.12(174)0.74

12、+0.9X7.4=(162)8.6-0.86+8X0.35(175)7.8-0.125-0.8=(163)5.6X(18.5-8.5-0.5)(176)37.5-0.3X(1.34-0.84)(164)0.125X4.78X80(177)(2.5+27.75-1.5) X1.6.(165)2.8X3.6+1.4X2.8(178)6.21-3.8+2.2(166)(0.4+40) X2.5(179)6.03+3.7+2.97(167)78.7-17.7X3.6(180)17.43-6.57-2.43(181)20.47-(1.47+6.8)(193)7.75X20-(3.24-3.04)(182

13、)13.26+4.71+3.47+5.29(194)1.25X0.5X8X0.2(183)22.74+8.68-13.74.(195)0.97X9+0.97(184)10-0.2-2.5(196)5.4-3X(3.8-2.9).(185)64X4.5+3.6 X 45(197)0.4X(3.2-0.8)-0.15(186)1.25X3.2X0.8(198)5.7+1.9X0.2-7.6(187)14.5X102(199)32.4X6.3+32.4X3.7(188)14.64+3.7X2.8(200)18.2-10.6X(0.9-0.75)(189)8.40.210.5.(201)0.25X3.

14、85X40(202)1.46X3.5+3.5X4.54.(190)0.125X9X8X0.3(203)7X12.5X0.8(191)4.62-5-0.66(204)4.7X3.6+4.7X6.4(192)5.78X2.3+5.78+5.78X6.7(205)1.45X(2.8+4.4) -2.4.(206)4.2X(6.18-3.03)+6.3(219)0.6+0.94-0.208(207)15.02-6.8-(1.02+1.2)(220)4.85X1.25X8(208)0.6 X (5-0.68)-1.2(221)(64-22.4-1.4)X1.2(209)2.7-4+6.3X0.25(22

15、2)18.3-6.25-3.75(210)(6.02+2.8)-0.4-2.05(223)2.8X3.6+1.4X2.8(211)3.08X3.5+6.2X3.08+3.08X0.3.(224)6.6 十14.5 -( 1.7+1.8)(212)2.3+3.91-(22-19.7)(225)0.25X9.87X4(213)21.6-64.8-(48.6-2.7X2).(226)36.7X2.1 + 10.8(214)93.6X3.6+1.4X3.6(227)8.45-0.45X0.1(215)0.25X0.8X0.125X0.4(228)0.73X102(216)2.7X1.5-2.7(229

16、)7.8X5.6+2.3X4.4(217)9.08+5.45+11.92+4.55(230)76.3X27-76.3X17.(218)1.25X30X1.2X0.8.(231)7.05X23.7+7.05X76.3.(232)(7.6-5.2)-0.4+2.54X32.(245)2.5-(6.8-4.9)X0.8.(233)17.68-5.2+2.7X1.5(246)102X4.5(234)35.6-5X1.73(247)3.4-(1.2+0.5)X5(235)(1.1-0.78)X(2.7-1.95)(248)8X(20-1.25)(236)1.3X0.75X4(249)0.654+10.9

17、X6.5(237)1.08-1.8X1.2(250)22.7X1.25X0.8(238)50.4X1.9-1.8(251)3.91X2.8+6.09X2.8.(239)0.82X0.25+1.18X0.25.(252)6.23+3.09=(240)8.5X(2.36+2.42)-0.25(253)132.4-59.8=(241)3.9-(1.3+0.6)X6-3.6(254)6.62X0.84=(242)4.25X6.3+3.7X4.25(255)2.07-0.023=(243)205X0.99(256)20.026-(8.6+9.7)X0.92-30.19(244)25.6-7.49-2.51(257)0.125X32X2.5(258)0.8X6.3-0.8X3.8(268)2.74X4.86+4.86X6.26+4.86(259)50.4-3.2X2.08(269)0.08X(12.5+2.5) X0.1(260)204+(3.4X0.5)(270)25.92+(10.1-14.5X0.2)(261)(43.26+