小數(shù)四則混合運算專項練習題(能簡便的要簡便)

1、小數(shù)混合運算專項練習276題（能簡便的要簡便運算）(1)0.11M.8+8.2 X0.11(14 )5.85 + (1.3+0.5) X6.(13 )1.25X2.4(26 )5.96+13 X (3.2 3.12)小數(shù)混合運算-2(2)2.34X99+2.34(15 )17.17- 6.8- 3.2- 6.17(3)5.427M.8(16 )5.4>< (1.3+2.15)田.2(4)132X101(17 )8.4 田.6+8.4 田.4(5)6.25 勺.25 田.8(18)16.8M0.1(6)2.5M6.(19 )10.9-0.90.2+1.86.3301-6.33(20

2、)1.25 >3.2 >0.25.(8) 1.56M.7+0.44M.7(21)1.36+4.85+2.64+6.15(22 )98.5-2.54(9) 1.8斗(3.41 2.9)田.03(10)0.125 >32 >2.5.(23 )5.4寸2.5 X (3.7 2.9)(11)1.258M8.5 0.258 M8.5(24 )0.8X (4 3.68 )用.01(12 )8.480.8X0.9(25 )83.7- 12.83- 0.17(27 )4.32 登.4M.7;(40 )1.25 >32X0.25.(28 )16.2M.5+3.8M.5;(41)15

3、.68- ( 7.78 4.32) - 2.32小數(shù)混合運算-4(42 )0.25 >3.2X1.25(29 )9.05 3.86 3.14;(43 )9.99 >1.01(30 )7.28+0.72 用.9(31)4.32+5.43+6.68(44 )4.63 >1.4+46.3 >0.86(32 )17.17-6.8- 3.2(45 )17.5 田.8T2.5(33 )5.29X9+5.29(46 )0.9+9.9+99.9+999.9 .(34)16.8M0.1(47 )2.9X99+2.9(48 )25M1.2M(35 )2.74X9.5+5 >0.274

4、(36 )0.36+9.63.2.(49 )23.25- 6.75- 3.25.(50)125X3.2X2.5(37 )3.75X25+6.25X25(51)3.6M0.1(38 )25.46- 8.23- 1.76(39 )2.9+7.1 X10(52 )5.8X2.7+0.58 >73(53 )3.6+6.4M.8(65 )0.8X6.3- 0.8 >3.8(66 )50432X2.08(54 )(1.48+3.02) + (3.6X0.5 )(67 )(20 0.8 >9 ) >5.7(55 )(36.7- 4.9 ) M0131.8.小數(shù)混合運算-6(68)2.

5、4M.5+3.6 勺.5(56 )6.3301-6.33(69)7.38-5.14+3.62 2.86(57 )35.6 5X1.73(70)0.12M.8+8.2 >0.12(58 )1.6X55.4-55.4X0.6(71)5.4寸0.51 + (1.2- 1.03)(59 )17.685.2+2.7X1.5.(72)(8.15.6) >0.91.05禮.04.(60 )1.08X0.80.27(73)10.8-0.8- (0.35+0.05)(61)102 >0.45(74)841 + (2.3 2.25)(75)2.64 >9.9+0.264(62 )22.78

6、T.25 田.8(63 )0.3401-0.34.(76) 4.52+0.61+1.39+6.48(64 )0.125 >32 >2.5(77) 4.27- ( 1.96- 1.73)(91)29.7 + (5.85 £65)(92 )7.4X9.9(78 )(294.4 T9.2>6) + (6+8)(79 )12.5X0.76>0.4 >8>2.5.小數(shù)混合運算-15(80 )4.98+8.02 >2.5(93 )3.84-2.7 >0.64(81)60.8 40.825(94 )8.68 8.68 用.56X0.5(82 )0.8

7、X69.6 M2.5(95)4.7 47+4.7+4.3 47.(83 )4.98X99+4.9(84 )6.483225(96) 2.72寸(8.26.5) >0.5;(85 )1.2X7.6+7.6X6.8.(97) 9.12+9.12X9 60.2;(86 )(9.4 5.8) >2.07(98)28.4 田.4 書.25;(87 )12.54- 4.56- 3.44- 1.54(99)27.36- 27.367.6.(88 )(9.36X5+9.36+9.36 >2 ) X1.25(100)3.25 >0.45+6.75 >0.45(89 )7.236 書

8、.18 14.3X0.02.(101) 31.5 24.53.5(90 )9.60.4X0.25(102) 7.5 M02(103 )6.3+3.7>2.8.(116 ) 52.4 - (15+0.6)勺.6(117 ) 9.87 >99+9.87(104) 2.15+8.73+1.27+7.85(118 )46.8 田.9 書.4(105) 11.87- ( 8.2+1.87)(106) 5.42- 3.87- 1.13(119 )5.5M7.3+6.7>5.5.(107) 4.38- 1.56+0.62 0.44(120)99 42+4.2(108) 0.4X270 2(

9、121)0.25 >1.25X3.2(109)(40+1.25)刈(122 ) 6.4M4+15>6.4+6.4(110 )(12.50.05)刈(123)(1.3+1.3X0.125 >8 ) + (80 77.4)(111)2.6X8.5+8.5X7.4(124) 4X (25+2.5+0.25)勺11(112 )9.9X6.9- 6.9X3.9(125) 6.25 +(17.2 3.6X5)用.32(113 ) 5.6X99+5.6(126) 28.4 >99+28.4(114 )2.5X (1.9+1.9+1.9+1.9)(127)0.94 >2.5 -

10、0.45(115)7.2 勺.25 3.(128 ) 4>0.8M2.5>2.5(129 )17.5E25M7+13.(141) 31.7田.63 (保留2位小數(shù))(130 ) 10.1X87(142 )2.4M.5+3.6 勺.5(131) 2.3+3.19+ (22 19.8)(143) 0.32 >0.25+0.08 %(132 )1.25X7.2.(133 ) 9.1 1.2 書6.24(144) (9.6+1.48 37 )和(145 )5.8寸4 X (1.34 0.14)(146 ) 5.4寸0.51 + (1.2- 1.03).(134 )7.3+12.8 -

11、 3.8>2.3(147)21.35- 3.25- 16.75(135)(5.36+7.64)勺3M00(148)33.02- ( 148.4 90.85) 25(136)7.575 寸(5.63- 1.88 ) >0.2.(149)32>2.5>0.125(137)7.5 ( 5.5+1.24)(150)18.1+ (3 0.299q.23) M .(138) 0.26+15.68+9.74+2.32(151)67- (2.98+0.67)(152)8M6 73.8X6(139) 13.26+9.55 -3.26(140 )6.1+3.9 6.1+3.9.(153)(

12、45+14) 73+710.(154)13.7Q125X8(166)(0.4+40) X2.5(167)78.7 17.7 M.6(155)0.8413 (3.12+5.28)(156)102 >0.56(168) 18寸0.3 X (86.5)(169)12.7+12.5+0.5.(169) 1.53M.7+0.47X1.7.(170)912.60.05=(170) 5.18+0.73+0.82(159)0.75M.8T.5(171) 6.3X3.7+6.3X6.3=(160)12.5X7.1X0.8(172) (3.7+1.7M.4) 25=(161) 6.12X99+6.12(17

13、3) 7.28+3.2 25=(174)0.74+0.9 >7.4=(162) 8.6 田.86+8 >0.35(175)7.80.1250.8=(163) 5.6X (18.5 8.5q.5)(176) 37.5寸0.3 X (1.34 0.84)(164)0.125 >4.78X80(177) (2.5+27.75 T.5) M.6.(165)2.8X3.6+1.4X2.8(178)6.21 -3.8+2.2(179)6.03+3.7+2.97(191)4.62 七用.66(180)17.43- 6.57- 2.43(192) 5.78 >2.3+5.78+5.78

14、 論7(181)20.47 - ( 1.47+6.8)(193) 7.75>20-(3.24 3.04).(194)1.25 >0.5 >8 >0.2(182) 13.26+4.71+3.47+5.29(195)0.97 >9+0.97(183) 22.74+8.68 13.74.(184)100.22.5(196)5.4寸3X( 3.8-2.9).(185)6445+3.6X5(197)0.4X (3.20.8)田.15(186)1.25X3.2X0.8(198)5.7+1.9X0.2W6(187)14.5M02(199)32.4 >6.3+32.4 X3

15、.7(188)14.64+3.7 >2.8(200)18.2- 10.6X (0.9 0.75)(189)8.4 田.21 禮.5.(201)0.25 >3.85 M0(202)1.46>3.5+3.5 >4.54.(190)0.125 >9 >8 >0.3(203)7M2.5>0.8(204)4.7X3.6+4.7£4(217)9.08+5.45+11.92+4.55小數(shù)混合運算-16(205)1.45M (2.8+4.4) 24.(218)1.25M0M.2X0.8.(206)4.2X (6.18- 3.03) +6.3(219)0

16、.6+0.94 - 0.208(207)15.02- 6.8- ( 1.02+1.2 )(220)4.85 >1.25X8(208) 0.6斗(50.68)勺.2(221) (64 22.4勺.4) M.2(209)2.7F+6.3 >0.25(222) 18.3-6.25- 3.75(223)2.8X3.6+1.4X2.8(210)(6.02+2.8 )禮.4-2.05(211)3.08X3.5+6.2 X3.08+3.08 >0.3.(224)6.6+14.5 (1.7+1.8)(225)0.25 >9.87 M(212) 2.3+3.91 + (22 19.7)(

17、226)36.7 21+10.8(213) 21.6寸64.8 (48.6 2.7>2).(214)93.6X3.6+1.4X3.6(227)8.45- 0.45X0.1(228)0.73 >102(215) 0.25X0.8X0.125X0.4(216)2.7M.52.7(229)7.8>5.6+2.3 >4.4(230)76.3X27 76.3X17.(243) 205X0.99(231) 7.05X23.7+7.05X76.3.(244)25.6-7.49- 2.51小數(shù)混合運算-18(232) (7.65.2)田.4+2.54 M2.(245) 2.5 (6.8

18、4.9) >0.8.(233)17.685.2+2.7X1.5(246)102 M.5(234)35.6- 5X1.73(247)3.4寸(1.2+0.5) X5(235)(1.1 0.78) X (2.7- 1.95)(248)8X (20- 1.25)(236)1.3X0.75 M(249)0.654+10.9 論5(237)1.081.8M.2(250)22.7M.25X0.8(238)50.4 M.91.8(251)3.91 >2.8+6.09 >2.8.(239)0.82X0.25+1.18X0.25.(240)8.54(2.36+2.42) £25(252)6.23+3.09=(241)3.9寸(1.3+0.6)對-3.6(253)132.4- 59.8=(242)4.25 &