小数四则混合运算专项练习题有答案ok

小数混合运算专项练习276题（有答案）0.11X1.8+8.2X0.11(8) 1.56X1.7+0.44X1.7(2) 2.34X99+2.34(9)1.8X[(3.41-2.9)+0.03]5.4+2.7X5.4+2.7X0.8132X101(10) 0.125X32X2.5.1.258X18.5—0.258X18.5(5) 6.25+1.25+0.8(12) 8.48+0.8X0.9(6) 2.5X16.(13) (6) 2.5X16.⑺ 6.33X101—6.33(14) 5.85+(1.3+0.5)X⑺ 6.33X101—6.33(15) (15) 17.17—6.8—3.2—6.17 (23) 5.4+[2.5X(3.7—2.9)](16)5.4X[(1.3+2.15)+0.2](24) 0.8X(4—3.68)+0.01(17)8.4+0.6+8.4+0.4(25) 83.7—12.83—0.17(18)16.8X10.1(26) 5.96+13X(3.2-3.12)(19)10.9—0.9+0.2+1.8(27) 4.32+2.4X1.7;(20)1.25X3.2X0.25.(28) 16.2X4.5+3.8X4.5;(21)1.36+4.85+2.64+6.15(29) 9.05-3.86—3.14;(22)98.5+2.5+4(30) 7.28+0.72+0.9(31) (31) 4.32+5.43+6.68 (39) 2.9+7.1X10(32) 17.17—6.8—3.2(40) 1.25X32X0.25.(33) 5.29X9+5.29(41) 15.68—(7.78—4.32)2.32(34) 16.8X10.1(42) 0.25X3.2X1.25(35) 2.74X9.5+5X0.274(43) 9.99X1.01(36) 0.36+9.6+3.2.(44) 4.63X1.4+46.3X0.86(37) 3.75X25+6.25X25(45) 17.5+0.8+12.5(38) 25.46—8.23—1.7646 0.9+9.9+99.9+999.9(47) (47) 2.9X99+2.9 (55) (36.7—4.9)X101—31.8.(48) (48) 25X11.2X4(56) 6.33X101-6.33(50) 125X3.2X2.5(51) 3.6X10.1(50) 125X3.2X2.5(51) 3.6X10.1(52) 5.8X2.7+0.58X73(60) 1.08X0.8+0.27(57) 35.6-5X1.73(49) 23.25—6.75—(57) 35.6-5X1.73(58) 1.6X55.4—55.4X0.6(53) 3.6+6.4X1.8102X0.45(54) (1.48+3.02)+(3.6X(53) 3.6+6.4X1.8102X0.45(54) (1.48+3.02)+(3.6X0.5)22.78+1.25+0.8(63) (63) 0.34X101-0.34. (71) 5.4+[0.51+(1.2—1.03)](64) 0.125X32X2.5(72) [(8.1—5.6)X0.9—1.05]+0.04.(65) (64) 0.125X32X2.5(72) [(8.1—5.6)X0.9—1.05]+0.04.(65) 0.8X6.3-0.8X3.810.8—0.8+(0.35+0.05)(66) 504+3.2X2.088X[1+(2.3-2.25)](67) (20-0.8X9)X5.72.64X9.9+0.264(68) 2.4X1.5+3.6+1.54.52+0.61+1.39+6.48(69) 7.38-5.14+3.62-2.864.27—(1.96—1.73)(70) 0.12X1.8+8.2X0.12(78) (294.4—19.2X6)+(6+8)(79) (79) 12.5X0.76X0.4X8X2.5. (87) 12.54—4.56—3.44—1.54(80) 4.98+8.02X2.5(81) 60.8(80) 4.98+8.02X2.5(81) 60.8—40.8+2.5(82) 0.8X69.6X12.5(90) 9.6+0.4X0.25(88) (9.36X5+9.36+9.36X2)X1.25(89) 7.236+0.18—14.3X0.02.(83) 4.98X99+4.9(91) 29.7(83) 4.98X99+4.9(92) 7.4X(92) 7.4X9.9(85) 1.2X7.6+7.6(85) 1.2X7.6+7.6X6.8.(93) 3.84-2.7X0.64(86) (9.4—5.8(86) (9.4—5.8)X2.07(94) 8.68-8.68+0.56X0.5(95) (95) 4.7X4.7+4.7+4.3X4.7. (103)6.3+3.7X2.8.(96) 2.72+[(8.2—6.5)X0.5];104 2.15+8.73+1.27+7.85(97) 9.12+9.12X9-60.2;11.87—((96) 2.72+[(8.2—6.5)X0.5];104 2.15+8.73+1.27+7.85(97) 9.12+9.12X9-60.2;11.87—(8.2+1.87)28.4+0.4+0.25;(106)5.42-3.87-1.1327.36—27.36+7.6.(107)4.38-1.56+0.62-0.443.25X0.45+6.75X0.45(108)0.4X270X2.31.5—24.5+3.5(109) (40+1.25)X8(102)7.5X102(110) (12.5—0.05)X8(111)(111)2.6X8.5+8.5X7.4 (119)5.5X17.3+6.7X5.5.(120)99X4.2+4.2(120)99X4.2+4.2(112)9.9X6.9-6.9X3.9(113)5.6X99+5.6(121)0.25X1.25X3.2(122)(122)6.4X14+15X6.4+6.4(114)2.5X(1.9+1.9+1.9+1.9)(115)7.2+1.25+8.(116)(115)7.2+1.25+8.(116)52.4-(15+0.6)+1.6(124)4X(25+2.5+0.25)+111(123) (1.3+1.3X0.125X8)+(80—77.4)(117)9.87X99+9.87(125)6.25+〔(117)9.87X99+9.87(126)28.4X(126)28.4X99+28.4(127)(127)0.94X2.5-0.45 (135) (5.36+7.64)+13X100(128)4X(128)4X0.8X12.5X2.57.575+[(5.63—1.88)X0.2]17.5+0.25X17+13.7.5—(5.5+1.24)(130)10.1X87(138)0.26+15.68+9.74+2.32(131)2.3+3.19-(22-19.8)(139)13.26+9.55-3.26(132)1.25X7.2.(140)6.1+3.9-6.1+3.9.(133)9.1-1.2-6-6.24(141)31.7+0.63(保留2位小数)7.3+12.8—3.8X2.3(142)2.4X1.5+3.6+1.5(143)(143)0.32X0.25+0.08+4 (151) 67-(2.98+0.67)(144) (9.6+1.48+3.7)+8(152) 8X16—73.8X6(145)5.8+[4X(1.34—0.14)](153) (45+14)+73+710.(146)5.4+[0.51+(1.2—1.03)].(154) 13.7X0.125X8(147) (147) 21.35—3.25—16.75(155) 0.8X[13-(3.12+5.28)](156) 102X0.56(149) (156) 102X0.56(149) 32X2.5X0.125(157) 1.53X1.7+0.47X1.7.(148) 33.02-(148.4-90.85)+2.5158) 5.18+0.73+0.82158) 5.18+0.73+0.82(150) 18.1+(3—0.299+0.23)X1.(159) (159) 0.75X1.8+1.5 (167) 78.7—17.7X3.6(160) (160) 12.5X7.1X0.8(168) 18+[0.3X(8—6.5)](169) (169) 12.7+12.5+0.56.12X99+6.128.6+0.86+8X0.35(170) 91+2.6+0.05=(171) 6.3X3.7+6.3X6.3=5.6X(18.5(171) 6.3X3.7+6.3X6.3=(164) 0.125X4.78X80(172) (3.7+1.7X0.4(164) 0.125X4.78X80(165) 2.8X3.6+1.4X2.87.28+3.2+2.5=(166) (0.4+40)X2.50.74+0.9X7.4=(175) (175) 7.8+0.125+0.8= (183) 22.74+8.68-13.74.(184) 10+0.2+2.537.5+[0.3X(184) 10+0.2+2.5(185) 64X4.5+3.6X45(2.5+27.75+1.5(185) 64X4.5+3.6X45(178) (178) 6.21-3.8+2.21.25X3.2X0.8(187) (187) 14.5X1026.03+3.7+2.9717.43-6.57-2.43(188) 14.64+3.7X2.820.47-(1.47+6.8)8.4+0.21+0.5.(182) 13.26+4.71+3.47+5.290.125X9X8X0.3(191) (191) 4.62+5+0.66 (199) 32.4X6.3+32.4X3.7(192) 5.78X2.3+5.78+5.78X6.7(200) 18.2-10.6X(0.9—0.75)(201) 0.25X3.85X40(201) 0.25X3.85X40(194) 1.25X0.5X8X0.2(202) 1.46X3.5+3.5X4.54.(193) 7.75X[20-(3.24—3.04)].195) 0.97 9+0.97203) 712.5 0.8195) 0.97 9+0.97(204) 4.7X3.6+4.7X6.45.4+[3X((204) 4.7X3.6+4.7X6.40.4X(3.2—0.8)+0.151.45X[(2.8+4.4)+2.4].(198) 5.7+1.9X(198) 5.7+1.9X0.2+7.64.2X(6.18—3.03)+6.3(207) (207) 15.02-6.8-(1.02+1.2) (215) 0.25X0.8X0.125X0.4(216) (216) 2.7X1.5-2.70.6X[(5—0.68)+1.2]2.7+4+6.3X0.25(217) 9.08+5.45+11.92+4.55(6.02+2.8)-0.4-2.051.25X30X1.2X0.8.(211) 3.08X3.5+6.2X3.08+3.08X0.3.(219) 0.6+0.94-0.208(212) 2.3+3.91+(22-19.7)(220) 4.85X1.25X8(213) 21.6+[64.8—(48.6—2.7X2)].(221) (64-22.4+1.4)X1.293.6X3.6+1.4X3.618.3-6.25—3.75(223) (223) 2.8X3.6+1.4X2.8 (231) 7.05X23.7+7.05X76.3.6.6+〔14.5—(1.7+1.8)〕[(7.6—5.2)+0.4+2.54]X32.(225) 0.25X9.87X4(233) 17.68+5.2+2.7X1.5(226) 36.7X2.1+10.8(234) 35.6-5X1.73(227) 8.45—0.45X0.1(235) (1.1—0.78)X(2.7—1.95)(228) 0.73X102(236) 1.3X0.75X47.8X5.6+2.3X4.4(237) 1.08+1.8X1.2(238) (238) 50.4X1.9-1.876.3X27-76.3X17.(239) 0.82X0.25+1.18X0.25.(247) 3.4+[(1.2+0.5)X5](240) 8.5X[(2.36+2.42)+0.25](248) 8X(20-1.25)(241) 3.9+[(1.3+0.6)X6—3.6](249) 0.654+10.9X6.5(242) 4.25X6.3+3.7X4.25250) 22.7 1.25 0.8243) 2050.99(251) 3.91X2.8+6.09X2.8.(244) 25.6—7.49—2.51(252) 6.23+3.09=(245) [2.5—(6.8—4.9)]X0.8.(253) 132.4-59.8=(246) 102X4.5(254) 6.62X0.84=(255) (255) 2.07+0.023=(263) 13.25—0.8+1.75T.2;(264) (264) 2.5X99+2.5;(256) [20.026-(8.6+9.7)X0.92]+30.19.(257) (257) 0.125X32X2.5(265) 10.36+4.8-16.5-5;(266) 12.5X2.4.(258) 0.8X6.3-0.8X(266) 12.5X2.4.(259) 50.4+3.2(259) 50.4+3.2X2.08(260) 204+(3.4X0.5)2.74(260) 204+(3.4X0.5)(43.26+2.34)+7.5(269) 0.08X(12.5+2.5)X0.1(20—0.8X9)X5.7.25.92+(10.1-14.5X0.2)(271) 0.487X12.5+48.7(271) 0.487X12.5+48.7272)(8.16+2.09)+[(10.3-9.3)+0.4].(275) 0.25X2010+20.10X7512.5X(7.2T.9)X0.8(273) 1.56(273) 1.56X1.7+0.44X1.7参考答案：0.11X1.8+8.2X0.11,=0.11X(1.8+8.2),=0.11X10,=1.1;2.34X99+2.34,=2.34X(99+1),=2.34X100,=234;5.4+2.7X0.8,=2X0.8,=1.6;132X101,=132X(100+1),=132X100+132,=13332;6.25+1.25+0.8,=6.25+(1.25X0.8),=6.25+1,=6.25;2.5X16,=(2.5X4)X4,=40⑺6.33X101-6.33,=6.33X(101T),=6.33X100,=633;(8)1.56X1.7+0.44X1.7,=1.7X(1.56+0.44),=1.7X2,=3.4;30.8+[(6.34—4.59)X4].1.8X[(3.41-2.9)+0.03],=1.8X[0.51+0.03],=1.8X17,=30.6;0.125X32X2.5,=(0.125X8)X(4X2.5),=1X10,=101.258X18.5-0.258X18.5,=18.5X(1.258-0.258),=18.5X1,=18.5;8.48+0.8X0.9,=10.6X0.9,=9.54;1.25X2.4,=1.25X8X0.3,=10X0.3,=3；5.85+(1.3+0.5)X6,=5.85+1.8X6,=3.25X6,=19.517.17-6.8-3.2-6.17=(17.17-6.17)-(6.8+3.2),=11-10,=1；5.4X[(1.3+2.15)+0.2]=5.4X[3.45+0.2],=5.4X17.25,=93.15;8.4-0.6+8.4-0.4=14+21=35;16.8X10.1=16.8x10+16.8x0.1,=168+1.68,=169.68;10.9-0.9-0.2+1.8=10.9-4.5+1.8,=8.2;1.25X3.2X0.25=(1.25X0.8)X(4X0.25),=1X1,=11.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,=15;98.5-2.5+4,=98.5+(2.5X4),=98.5-10,=9.85;5.4-[2.5X(3.7-2.9)],=5.4-[2.5X0.8],=5.4+2,=2.7;0.8X(4-3.68)+0.01,=0.8X0.32-0.01,=0.256-0.01,=25.6;83.7-12.83-0.17,=83.7-(12.83+0.17),=83.7-13,=70.7;5.96+13X(3.2-3.12),=5.96+13X0.08,=5.96+1.04,=7.4.32-2.4X1.7,=1.8X1.7,=3.06;16.2X4.5+3.8X4.5,=(16.2+3.8)X4.5,=20X4.5,=90;9.05-3.86-3.14,=9.05-(3.86+3.14),=9.05-7,=2.05;7.28+0.72-0.9,=7.28+0.8,=8.084.32+5.43+6.68,=4.32+6.68+5.43,=11+5.43,=16.43;17.17-6.8-3.2,=17.17-(6.8+3.2),=17.17-10,=7.17;5.29X9+5.29,=5.29X(9+1),=5.29X10,=52.9;16.8X10.1,=16.8X10+16.8X0.1,=168+1.68,=169.68;2.74X9.5+5X0,274,=2.74X9.5+0.5X2.74,=2.74X(9.5+0.5),=2.74X10,=27.4;0.36+9.6-3.2,=0.36+3,=3.363.75X25+6.25X25,=25X(3.75+6.25),=25X10,=250;25.46-8.23-1.76,=25.46-(8.23+1.76),=25.46-9.99=15.45;2.9+7.1X10,=2.9+71,=73.9;1.25X32X0.25=(1.25X8)X(4X0.25),=10X1,=1.15.68-(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;0.25X3.2X1.25,3.6+6.43.6+6.4X1.8,=3.6+11.52,=15.12;(1.48+3.02)+(3.6X0.5),=4.5+1.8,=2.5;(36.7-4.9)X101-31.8,=31.8X101-31.8,=31.8X(101-1),=31.8X100,=31806.33X101-6.33=6.33X(101-1),=6.33X100,=633;35.6-5X1.73,=35.6-8.65,=26.95;1.6X55.4-55.4X0.6,=55.4X(1.6-0.6),=55.4X1,=55.4;17.68+5.2+2.7X1.5,=3.4+4.05,=7.451.08X0.8+0.27=1.08+0.27X0.8,=4X0.8,=3.2;102X0.45=(100+2)X0.45,=100X0.45+2X0.45,=45+0.9,=45.9;22.78+1.25+0.8=22.78+(1.25X0.8),=22.78+1,=22.78;0.34X101-0.34=(101-1)X0.34,=100X0.34,=340.125X32X2.5,=(0.125X8)X(4X2.5),=1X10,=10;0.8X6.3-0.8X3.8,=0.8X(6.3-3.8),=0.8X2.5,=0.25X4X0.8X1.25,=(0.25X4)X(0.8X1.25),=1X1,=1;9.99X1.01,=(10-0.01)x1.01,=10.1-0.0101,=10.0899;4.63X1.4+46.3X0.86,=46.3X0.14+46.3X0.86,=46.3X(0.14+0.86),=46.3X1,=46.3;17.5+0.8+12.5,=17.5+(0.8X12.5),=17.5+1,=17.5;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,=1110.62.9X99+2.9=(99+1)X2.9,=100X2.9,=290;25X11.2X4=25X4X11.2,=100X11.2,=1120;23.25-6.75-3.25=23.25-(6.75+3.25),=23.25-10,=13.25125X3.2X2.5,=125X8X0.4X2.5,=(125X8)X(0.4X2.5),=1000X1,=1000;3.6X10.1,=3.6X(10+0.1),=3.6X10+3.6X0.1,=36+0.36,=36.36;5.8X2.7+0.58X73,=5.8X2.7+5.8X7.3,=5.8X(2.7+7.3),=5.8X10,=58;二2；504+3.2X2.08,=157.5X2.08,=327.6;(20-0.8X9)X5.7,=(20-7.2)X5.7,=12.8X5.7,=72.962.4X1.5+3.6-1.5,=3.6+2.4,=6；7.38-5.14+3.62-2.86,=(7.38+3.62)-(5.14+2.86),=11-8,=3；0.12X1.8+8.2X0.12,=0.12X(1.8+8.2),=0.12X10,=1.2；5.4+[0.51+(1.2—1.03)],=5.4+[0.51+0.17],=5.4+3,=1.8;[(8.1—5.6)X0.9-1.05]+0.04,=[2.5X0.9-1.05]+0.04,=[2.25-1.05]+0.04,=1.2+0.04,=3010.8-0.8+(0.35+0.05),=10.8-0.8+0.4,=10.8-2,=8.8;8X[1+(2.3-2.25)],=8X[1+0.05],=8X20,=160;2.64X9.9+0.264,=0.264X99+0.264,=0.264X(99+1),=0.264X100,=26.4;4.52+0.61+1.39+6.48=(4.52+6.48)+(0.61+1.39),=11+2,=13;4.27-(1.96-1.73)=4.27-0.23,=4.04;(294.4-19.2X6)+(6+8)=(294.4—115.2)+14,=179.2+14,=12.8;12.5X0.76X0.4X8X2.5=(12.5X8)X(0.4X2.5)X0.76,=100X1X0.76,=76.4.98+8.02X2.5,=4.98+20.25,=25.03;60.8-40.8+2.5,=60.8-16.32,=44.48;0.8X69.6X12.5,=(0.8X12.5)X69.6,=10X69.6,=696;4.98X99+4.9,=493.02+4.9,=497.92;6.48+3.2+2.5,=6.48+(3.2X2.5),=6.48+8,=0.81;1.2X7.6+7.6X6.8,=7.6X(1.2+6.8),=7.6X8,=60.8(9.4-5.8)X2.07,=3.6X2.07,=7.452;12.54—4.56—3.44-1.54,=(12.54—1.54)—(4.56+3.44),=11-8,=3；(9.36X5+9.36+9.36X2)X1.25,=9.36X(5+2+1)X1.25,=9.36X8X1.25,=9.36X(8X1.25),=93.6;7.236+0.18-14.3X0.02,=40.2-0.286,=39.914.9.6+0.4X0.25,=24X0.25,=6；29.7+(5.85+0.65),=29.7+9,=3.3;7.4X9.9,=7.4X(10-0.1),=7.4X10-7.4X0.1,=74-0.74,=73.26;3.84-2.7X0.64,=3.84-1.728,=2.112;8.68—8.68+0.56X0.5,=8.68-15.5X0.5,=8.68-7.75,=0.93;4.7X4.7+4.7+4.3X4.7,=4.7X(4.7+4.3+1),=4.7X10,=472.72+[(8.2—6.5)X0.5]=2.72+[1.7X0.5],=2.72+0.85,=3.2;9.12+9.12X9-60.2=(1+9)X9.12-60.2,=10X9.12-60.2,=91.2-60.2,=31；28.4+0.4+0.25=28.4+(0.4X0.25),=28.4+0.1,=284;27.36-27.36+7.6=27.6-3.6,=243.25X0.45+6.75X0.45,=0.45X(3.25+6.75),=0.45X10,=4.5;31.5—24.5+3.5,=31.5-7,=24.5;7.5X102,=7.5X(100+2),=7.5X100+7.5X2,=750+15,=765;6.3+3.7X2.8,=6.3+10.36,=16.66.2.15+8.73+1.27+7.85=(2.15+7.85)+(8.73+1.27),=10+10，=20;11.87—(8.2+1.87),=11.87-1.87-8.2,=10-8.2,=1.8;5.42-3.87-1.13,=5.42-5,=0.42;4.38—1.56+0.62—0.44,=(4.38+0.62)-(1.56+0.44),=5-2,=3；0.4X270X2.5,=(0.4X2.5)X270,=270;(40+1.25)X8,=40X8+1.25X8,=320+10,=330;(12.5-0.05)X8,=12.5X8-0.05X8,=100-0.4,=99.6;2.6X8.5+8.5X7.4,=(2.6+7.4)X8.5,=85;9.9X6.9-6.9X3.9,=(9.9-3.9)X6.9,=6X6.9,=41.4;5.6X99+5.6,=5.6X(99+1),=560;2.5X(1.9+1.9+1.9+1.9),=2.5X4X1.9,=10X1.9,=19;7.2+1.25+8,=7.2+8+1.25,=0.9-1.25,=0.72.52.4-(15+0.6)+1.6,=52.4-15.6-1.6,=52.4-9.75,=42.65;9.87X99+9.87,=9.87X(99+1),=987;=1203=120310.1X87,=(10+0.1)X87,=87+8.7,=95.7;2.3+3.19+(22-19.8),=2.3+3.19+2.2,=2.3+1.45,=3.75;1.25X7.2,=1.25X8X0.9,=10X0.9,=99.1-1.2-6-6.24=9.1-0.2-6.24,=8.9-6.24,=2.66;7.3+12.8-3.8X2.3=20.1-8.74,=11.36;(5.36+7.64)+13X100=13+13X100,=100;7.575+[(5.63—1.88)X0.2]=7.575+[3.75X0.2],=7.575+0.75,=10.17.5—(5.5+1.24),=7.5-5.5-1.24,=2-1.24,=0.76;0.26+15.68+9.74+2.32 ,=(0.26+9.74)+(15.68+2.32),=10+18,=28;13.26+9.55-3.26,=13.26-3.26+9.55,=10+9.55,=19.55;6.1+3.9-6.1+3.9,=6.1-6.1+(3.9+3.9),=0+7.8,=7.831.7+0.63~50.32;2.4X1.5+3.6+1.5=3.6+2.4,二6；0.32X0.25+0.08+4=0.08+0.08+4,46.8+0.9+0.4,=46.8+(0.9X0.4),=46.8+0.36,=130;5.5X17.3+6.7X5.5,=5.5X(17.3+6.7),=5.5X24,=13299X4.2+4.2=4.2X(99+1),=4.2X100,=420;0.25X1.25X3.2=0.25X1.25X(4X0.8),=0.25X4X(1.25X0.8),=1X1,二1；6.4X14+15X6.4+6.4=6.4X(14+15+1),=6.4X30,=192;(1.3+1.3X0.125X8)+(80-77.4)=(1.3+1.3X1)+2.6,=2.6+2.6,二1；4X(25+2.5+0.25)+111=(4X25+4X2.5+4X0.25)+111,=(100+10+1)+111,=111+111,二1；6.25-[(17.2—3.6X4.5)+0.32]=6.25+[(17.2-16.2)+0.32],=6.25+(1+0.32),=6.25+3.125,=228.4X99+28.4,=28.4X(99+1),=28.4X100,=2840.0.94X2.5-0.45,=2.35-0.45,=1.9.4X0.8X12.5X2.5,=(4X2.5)X(0.8X12.5),=10X10,=100.17.5+0.25X17+13,=70X17+13,=1190+13,=0.08+0.02,=0.08+0.02,=0.1;(9.6+1.48+3.7)+8=(9.6+0.4)+8,=10+8,=1.25;5.8+[4X(1.34-0.14)]=5.8-[4X1.2],=5.8+4.8,=1.21;5.4+[0.51+(1.2—1.03)]=5.4+[0.51+0.17],=5.4+3,=1.821.35-3.25-16.75,=21.35-(3.25+16.75),=21.35-20,=1.35;33.02-(148.4-90.85)+2.5,=33.02—57.55+2.5,=33.02-23.02,=10;32X2.5X0.125,=4X8X2.5X0.125,=(4X2.5)X(8X0.125),=10X1,=10;18.1+(3-0.299+0.23)X1,=18.1+(3-1.3)X1,=18.1+1.7X1,=18.1+1.7,=19.867-(2.98+0.67),=67-3.65,=63.35;8X16-73.8X6,=128+442.8,=570.8;(45+14)+73+710,=59+73+710,5口=—+7107359=710—7513.7X0.125X8,=13.7X(0.125X8),=13.7X1,=13.7;0.8X[13-(3.12+5.28)],=0.8X[13-8.4],=0.8X4.6,=3.68;102X0.56,=(100+2)X0.56,=100X0.56+2X0.56,=56+1.12,=57.12;1.53X1.7+0.47X1.7,=(1.53+0.47)X1.7,=2X1.7,=3.45.18+0.73+0.82=(5.18+0.82)+0.73,=6+0.73,=6.73;0.75X1.8-1.5,=1.35+1.5,=0.9;12.5X7.1X0.8,=(12.5X0.8)X7.1,=10X7.1,=71；6.12X99+6.12,=6.12X(99+1),=6.12X100,=612;8.6+0.86+8X0.35,=10+2.8,=12.8;5.6X(18.5—8.5+0.5),=5.6X(18.5-17),=5.6X1.5,=8.40.125X4.78X80,=0.125X4.78X8X10,=(0.125X8)X(4.78X10),=1X47.8,=47.8;2.8X3.6+1.4X2.8,=2.8X(3.6+1.4),=2.8X5,=14;(0.4+40)X2.5,=0.4X2.5+40X2.5,=1+100,=101;78.7—17.7X3.6,=78.7-63.72,=14.98;18-[0.3X(8-6.5)],=18-[0.3X1.5],=18-0.45,=40;12.7+12.5+0.5,=12.7+(12.5+0.5),=12.7+13,=25.791-2.6+0.05,=35-0.05,=700;6.3X3.7+6.3X6.3,=6.3X(3.7+6.3),=6.3X10,=63;(3.7+1.7X0.4)+2.5,=(3.7+0.68)-2.5,=4.38-2.5,=1.752;7.28+3.2-2.5,=7.28+1.28,=8.56;0.74+0.9X7.4,=(1+9)X0.74,=10X0.74,=7.4;7.8-0.125-0.8,=7.8+(0.125X0.8),=7.8-0.1,=7837.5-[0.3X(1.34-0.84)],=37.5+[0.3X0.5],=37.5-0.15,=250;(2.5+27.75-1.5)X1.6,=(2.5+18.5)X1.6,=21X1.6,=33.66.21-3.8+2.2,=2.41+2.2,=4.61;6.03+3.7+2.97,=(6.03+2.97)+3.7,=9+3.7,=12.7;17.43-6.57-2.43,=17.43-(6.57+2.43),=17.43-9,=8.43;20.47-(1.47+6.8),=20.47-1.47-6.8,=19-6.8,=12.2;13.26+4.71+3.47+5.29,=(13.26+3.47)+(4.71+5.29),=16.73+10,=26.73;22.74+8.68-13.74,=(22.74-13.74)+8.68,=9+8.68,=17.6810-0.2-2.5,=10-(0.2X2.5),=10-0.5,=20;64X4.5+3.6X45,=6.4X45+3.6X45,=(6.4+3.6)X45,=10X45,=450;1.25X3.2X0.8,=(1.25X0.8)X3.2,=1X3.2,=3.2;14.5X102,=14.5X(100+2),=14.5X100+14.5X2,=1450+29,=1479;14.64+3.7X2.8,=14.64+10.36,=25;8.4-0.21-0.5,=40-0.5,=800.125X9X8X0.3,=(0.125X8)X(9X8),=1X72,二72;4.62+5-0.66,=4.62+(5X0.66),=4.62+3.3,=1.4;5.78X2.3+5.78+5.78X6.7,=5.78X(2.3+1+6.7),=5.78X10,=57.8;7.75X[20-(3.24-3.04)],=7.75X[20+0.2],=7.75X100,=7751.25X0.5X8X0.2,=(1.25X8)X(0.5X0.2),=10X0.1,二1；0.97X9+0.97,=0.97X(9+1),=0.97X10,=9.7;5.4+[3X(3.8-2.9)],=5.4+[3X0.9],=5.4+2.7,=20.4X(3.2—0.8)+0.15,=0.4X2.4+0.15,=0.96+0.15,=6.4;5.7+1.9X0.2+7.6,=5.7+0.38+7.6,=5.7+0.05,=5.75;32.4X6.3+32.4X3.7,=32.4X(6.3+3.7),=32.4X10,=324;18.2-10.6X(0.9-0.75),=18.2-10.6X0.15,=18.2-1.59,=16.61;0.25X3.85X40,=0.25X40X3.85,=10X3.85,=38.5;1.46X3.5+3.5X4.54,=3.5X(1.46+4.54),=3.5X6,=217X12.5X0.8,=7X(12.5X0.8),=7X10,=70;4.7X3.6+4.7X6.4,=4.7X(3.6+6.4),=4.7X10,=47;1.45X[(2.8+4.4)+2.4],=1.45X[7.2+2.4],=1.45X3,=4.354.2X(6.18-3.03)+6.3,=4.2X3.15+6.3,=13.23+6.3,=19.53;15.02-6.8-(1.02+1.2),=15.02-6.8-1.02-1.2,=(15.02-1.02)-(6.8+1.2),=14—8,=6；0.6X[(5—0.68)+1.2],=0.6X[4.32+1.2],=0.6X3.6,=2.16;2.7+4+6.3X0.25,=2.7X0.25+6.3X0.25,=(2.7+6.3)X0.25,=9X0.25,=2.25;(6.02+2.8)-0.4-2.05,=8.82+0.4-2.05,=22.05-2.05,=20;3.08X3.5+6.2X3.08+3.08X0.3,=(3.5+6.2+0.3)X3.08,=10X3.08,=30.82.3+3.91+(22-19.7),=2.3+3.91+2.3,=2.3+1.7,=4；21.6+[64.8—(48.6—2.7X2)],=21.6+[64.8-(48.6-5.4)],=21.6+[64.8-43.2],=21.6+21.6,=193.6X3.6+1.4X3.6,=(93.6+1.4)X3.6,=95X3.6,=(100-5)X3.6,=100X3.6-5X3.6,=360-18,=342;0.25X0.8X0.125X0.4,=(0.25X0.4)X(0.8X0.125),=0.1X0.1,=0.01;2.7X1.5—2.7,=2.7X(1.5T),=2.7X0.5,=1.35;9.08+5.45+11.92+4.55,=(9.08+11.92)+(5.45+4.55),=21+10,=31；1.25X30X1.2X0.8,=(1.25X0.8)X(30X1.2),=1X36,=360.6+0.94-0.208,=1.54-0.208,=1.332;4.85X1.25X8,=4.85X(1.25X8),=4.85X10,=48.5;(64-22.4+1.4)X1.2,=(64-16)X1.2,=48X1.2,=57.6;18.3-6.25-3.75,=18.3-(6.25+3.75),=18.3-10,=8.3;2.8X3.6+1.4X2.8,=2.8X(3.6+1.4),=2.8X5,=14;6.6+[14.5-(1.7+1.8)],=6.6+[14.5—3.5],=6.6+11,=0.60.25X9.87X4,=0.25X4X9.87,=1X9.87,=9.87;7X2.1+10.8,=77.07+10.8,=87.87;8.45-0.45X0.1,=8.45-0.045,=8.405;0.73X102,=0.73X(100+2),=0.73X100+0.73X2,=73+1.46,=74.46;7.8X5.6+2.3X4.4,=43.68+10.12,=53.8;76.3X27-76.3X17=76.3X(27-17),=76.3X10,=763.7.05X23.7+7.05X76.3=(23.7+76.3)X7.05,=100X7.05,=705[(7.6—5.2)+0.4+2.54]X32,=[2.4+0.4+2.54]X32,=[6+2.54]X32,=8.54X32,=273.2817.68+5.2+2.7X1.5,=3.4+4.05,=7.45;35.6-5X1.73,=35.6-8.65,=26.95;(1.1-0.78)X(2.7-1.95),=0.32X0.75,=0.241.3X0.75X4,=1.3X3X0.25X4,=1.3X3X(0.25X4),=3.9X1,=3.9;(237)1.08+1.8X1.2=0.6X1.2,=0.72;50.4X1.9-1.8,=95.76-1.8,=93.96;0.82X0.25+1.18X0.25,=(0.82+1.18)X0.25,=2X0.25,=0.58.5X[(2.36+2.42)-0