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小数混合运算专项练习276题(有答案)0.11×1.8+8.2×0.11 2.34×99+2.34 5.4÷2.7×0.8132×101 6.25÷1.25÷0.8 2.5×16.6.33×101﹣6.33 1.56×1.7+0.44×1.71.8×[(3.41﹣2.9)÷0.03]0.125×32×2.5.1.258×18.5﹣0.258×18.5 8.48÷0.8×0.91.25×2.4 5.85÷(1.3+0.5)×6.17.17﹣6.8﹣3.2﹣6.17 5.4×[(1.3+2.15)÷0.2] 8.4÷0.6+8.4÷0.416.8×10.1 10.9﹣0.9÷0.2+1.8 1.25×3.2×0.25.1.36+4.85+2.64+6.1598.5÷2.5÷45.4÷[2.5×(3.7﹣2.9)]0.8×(4﹣3.68)÷0.0183.7﹣12.83﹣0.175.96+13×(3.2﹣3.12)4.32÷2.4×1.7;16.2×4.5+3.8×4.5;9.05﹣3.86﹣3.14;7.28+0.72÷0.9.
4.32+5.43+6.68 17.17﹣6.8﹣3.2 5.29×9+5.2916.8×10.1 2.74×9.5+5×0.274 0.36+9.6÷3.2.3.75×25+6.25×25 25.46﹣8.23﹣1.76 2.9+7.1×10 1.25×32×0.25.15.68﹣(7.78﹣4.32)﹣2.32 0.25×3.2×1.25 9.99×1.014.63×1.4+46.3×0.86 17.5÷0.8÷12.5 0.9+9.9+99.9+999.9.2.9×99+2.9 25×11.2×4 23.25﹣6.75﹣3.25.125×3.2×2.5 3.6×10.1 5.8×2.7+0.58×733.6+6.4×1.8 (1.48+3.02)÷(3.6×0.5) (36.7﹣4.9)×101﹣31.8.
6.33×101﹣6.33 35.6﹣5×1.73 1.6×55.4﹣55.4×0.6 17.68÷5.2+2.7×1.5.1.08×0.8÷0.27102×0.4522.78÷1.25÷0.80.34×101﹣0.34.0.125×32×2.50.8×6.3﹣0.8×3.8504÷3.2×2.08(20﹣0.8×9)×5.72.4×1.5+3.6÷1.5 7.38﹣5.14+3.62﹣2.860.12×1.8+8.2×0.12 5.4÷[0.51÷(1.2﹣1.03)][(8.1﹣5.6)×0.9﹣1.05]÷0.04.10.8﹣0.8÷(0.35+0.05) 8×[1÷(2.3﹣2.25)]2.64×9.9+0.264 4.52+0.61+1.39+6.484.27﹣(1.96﹣1.73)(294.4﹣19.2×6)÷(6+8)12.5×0.76×0.4×8×2.5.4.98+8.02×2.5 60.8﹣40.8÷2.5 0.8×69.6×12.54.98×99+4.9 6.48÷3.2÷2.5 1.2×7.6+7.6×6.8.(9.4﹣5.8)×2.07 12.54﹣4.56﹣3.44﹣1.54(9.36×5+9.36+9.36×2)×1.25 7.236÷0.18﹣14.3×0.02.9.6÷0.4×0.25 29.7÷(5.85÷0.65)7.4×9.9 3.84﹣2.7×0.648.68﹣8.68÷0.56×0.5 4.7×4.7+4.7+4.3×4.7.
2.72÷[(8.2﹣6.5)×0.5];9.12+9.12×9﹣60.2;28.4÷0.4÷0.25;27.36﹣27.36÷7.6.3.25×0.45+6.75×0.45 31.5﹣24.5÷3.5 7.5×1026.3+3.7×2.8.2.15+8.73+1.27+7.85 11.87﹣(8.2+1.87) 5.42﹣3.87﹣1.134.38﹣1.56+0.62﹣0.44 0.4×270×2. (40+1.25)×8(12.5﹣0.05)×8 2.6×8.5+8.5×7.4 9.9×6.9﹣6.9×3.95.6×99+5.6 2.5×(1.9+1.9+1.9+1.9) 7.2÷1.25÷8.52.4﹣(15+0.6)÷1.69.87×99+9.87 46.8÷0.9÷0.4 5.5×17.3+6.7×5.5.99×4.2+4.2 0.25×1.25×3.26.4×14+15×6.4+6.4 (1.3+1.3×0.125×8)÷(80﹣77.4)4×(25+2.5+0.25)÷111 6.25÷〔(17.2﹣3.6×4.5)÷0.32〕28.4×99+28.4 0.94×2.5﹣0.45 4×0.8×12.5×2.5 17.5÷0.25×17+13.10.1×87 2.3+3.19÷(22﹣19.8) 1.25×7.2.
9.1﹣1.2÷6﹣6.24 7.3+12.8﹣3.8×2.3(5.36+7.64)÷13×100 7.575÷[(5.63﹣1.88)×0.2].7.5﹣(5.5+1.24) 0.26+15.68+9.74+2.32 13.26+9.55﹣3.26 6.1+3.9﹣6.1+3.9.31.7÷0.63(保留2位小数)2.4×1.5+3.6÷1.50.32×0.25+0.08÷4(9.6+1.48÷3.7)÷85.8÷[4×(1.34﹣0.14)]5.4÷[0.51÷(1.2﹣1.03)].21.35﹣3.25﹣16.7533.02﹣(148.4﹣90.85)÷2.532×2.5×0.12518.1+(3﹣0.299÷0.23)×1.67﹣(2.98+0.67)8×16﹣73.8×6(45+14)÷73+710.13.7×0.125×8 0.8×[13﹣(3.12+5.28)]102×0.56 1.53×1.7+0.47×1.7.5.18+0.73+0.82 0.75×1.8÷1.5 12.5×7.1×0.86.12×99+6.12 8.6÷0.86+8×0.355.6×(18.5﹣8.5÷0.5)
0.125×4.78×80 2.8×3.6+1.4×2.8 (0.4+40)×2.578.7﹣17.7×3.6 18÷[0.3×(8﹣6.5)] 12.7+12.5+0.5.91÷2.6÷0.05= 6.3×3.7+6.3×6.3= (3.7+1.7×0.4)÷2.5=7.28+3.2÷2.5= 0.74+0.9×7.4= 7.8÷0.125÷0.8=37.5÷[0.3×(1.34﹣0.84)](2.5+27.75÷1.5)×1.6.6.21﹣3.8+2.2 6.03+3.7+2.9717.43﹣6.57﹣2.43 20.47﹣(1.47+6.8)13.26+4.71+3.47+5.29 22.74+8.68﹣13.74.10÷0.2÷2.5 64×4.5+3.6×45 1.25×3.2×0.814.5×102 14.64+3.7×2.8 8.4÷0.21÷0.5.0.125×9×8×0.3 4.62÷5÷0.665.78×2.3+5.78+5.78×6.7 7.75×[20÷(3.24﹣3.04)].1.25×0.5×8×0.2 0.97×9+0.97 5.4÷[3×﹙3.8﹣2.9﹚].0.4×(3.2﹣0.8)÷0.155.7+1.9×0.2÷7.632.4×6.3+32.4×3.718.2﹣10.6×(0.9﹣0.75)0.25×3.85×401.46×3.5+3.5×4.54.7×12.5×0.8 4.7×3.6+4.7×6.4 1.45×[(2.8+4.4)÷2.4].4.2×(6.18﹣3.03)+6.315.02﹣6.8﹣(1.02+1.2)0.6×[(5﹣0.68)÷1.2]2.7÷4+6.3×0.25(6.02+2.8)÷0.4﹣2.053.08×3.5+6.2×3.08+3.08×0.3.2.3+3.91÷(22﹣19.7) 21.6÷[64.8﹣(48.6﹣2.7×2)].93.6×3.6+1.4×3.60.25×0.8×0.125×0.42.7×1.5﹣2.79.08+5.45+11.92+4.551.25×30×1.2×0.8.0.6+0.94﹣0.208 4.85×1.25×8 (64﹣22.4÷1.4)×1.218.3﹣6.25﹣3.75 2.8×3.6+1.4×2.8 6.6÷〔14.5﹣(1.7+1.8)〕0.25×9.87×436.7×2.1+10.88.45﹣0.45×0.10.73×1027.8×5.6+2.3×4.476.3×27﹣76.3×17.7.05×23.7+7.05×76.3.[(7.6﹣5.2)÷0.4+2.54]×32.17.68÷5.2+2.7×1.5 35.6﹣5×1.73 (1.1﹣0.78)×(2.7﹣1.95)1.3×0.75×41.08÷1.8×1.250.4×1.9﹣1.80.82×0.25+1.18×0.25.8.5×[(2.36+2.42)÷0.25] 3.9÷[(1.3+0.6)×6﹣3.6] 4.25×6.3+3.7×4.25205×0.99 25.6﹣7.49﹣2.51 [2.5﹣(6.8﹣4.9)]×0.8.102×4.5 3.4÷[(1.2+0.5)×5] 8×(20﹣1.25)0.654+10.9×6.5 22.7×1.25×0.8 3.91×2.8+6.09×2.8.
6.23+3.09= 132.4﹣59.8= 6.62×0.84= 2.07÷0.023=[20.026﹣(8.6+9.7)×0.92]÷30.19.0.125×32×2.5 0.8×6.3﹣0.8×3.8 50.4÷3.2×2.08204÷(3.4×0.5) (43.26+2.34)÷7.5 (20﹣0.8×9)×5.7.13.25﹣0.8+1.75﹣1.2;2.5×99+2.5;10.36+4.8﹣16.5÷5;12.5×2.4.38.78﹣19.59+41.22﹣30.412.74×4.86+4.86×6.26+4.860.08×(12.5+2.5)×0.125.92+(10.1﹣14.5×0.2)0.487×12.5÷48.7(8.16+2.09)÷[(10.3﹣9.3)÷0.4].1.56×1.7+0.44×1.7 12.5×(7.2﹣1.9)×0.8 0.25×2010+20.10×75 30.8÷[(6.34﹣4.59)×4].参考答案:(1)0.11×1.8+8.2×0.11,=0.11×(1.8+8.2),=0.11×10,=1.1;(2)2.34×99+2.34,=2.34×(99+1),=2.34×100,=234;(3)5.4÷2.7×0.8,=2×0.8,=1.6;(4)132×101,=132×(100+1),=132×100+132,=13332;(5)6.25÷1.25÷0.8,=6.25÷(1.25×0.8),=6.25÷1,=6.25;(6)2.5×16,=(2.5×4)×4,=40(7)6.33×101﹣6.33,=6.33×(101﹣1),=6.33×100,=633;(8)1.56×1.7+0.44×1.7,=1.7×(1.56+0.44),=1.7×2,=3.4;(9)1.8×[(3.41﹣2.9)÷0.03],=1.8×[0.51÷0.03],=1.8×17,=30.6;(10)0.125×32×2.5,=(0.125×8)×(4×2.5),=1×10,=10(11)1.258×18.5﹣0.258×18.5,=18.5×(1.258﹣0.258),=18.5×1,=18.5;(12)8.48÷0.8×0.9,=10.6×0.9,=9.54;(13)1.25×2.4,=1.25×8×0.3,=10×0.3,=3;(14)5.85÷(1.3+0.5)×6,=5.85÷1.8×6,=3.25×6,=19.5(15)17.17﹣6.8﹣3.2﹣6.17=(17.17﹣6.17)﹣(6.8+3.2),=11﹣10,=1;(16)5.4×[(1.3+2.15)÷0.2]=5.4×[3.45÷0.2],=5.4×17.25,=93.15;(17)8.4÷0.6+8.4÷0.4=14+21=35;(18)16.8×10.1=16.8×10+16.8×0.1,=168+1.68,=169.68;(19)10.9﹣0.9÷0.2+1.8=10.9﹣4.5+1.8,=8.2;(20)1.25×3.2×0.25=(1.25×0.8)×(4×0.25),=1×1,=1(21)1.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,=15;(22)98.5÷2.5÷4,=98.5÷(2.5×4),=98.5÷10,=9.85;(23)5.4÷[2.5×(3.7﹣2.9)],=5.4÷[2.5×0.8],=5.4÷2,=2.7;(24)0.8×(4﹣3.68)÷0.01,=0.8×0.32÷0.01,=0.256÷0.01,=25.6;(25)83.7﹣12.83﹣0.17,=83.7﹣(12.83+0.17),=83.7﹣13,=70.7;(26)5.96+13×(3.2﹣3.12),=5.96+13×0.08,=5.96+1.04,=7.(27)4.32÷2.4×1.7,=1.8×1.7,=3.06;(28)16.2×4.5+3.8×4.5,=(16.2+3.8)×4.5,=20×4.5,=90;(29)9.05﹣3.86﹣3.14,=9.05﹣(3.86+3.14),=9.05﹣7,=2.05;(30)7.28+0.72÷0.9,=7.28+0.8,=8.08(31)4.32+5.43+6.68,=4.32+6.68+5.43,=11+5.43,=16.43;(32)17.17﹣6.8﹣3.2,=17.17﹣(6.8+3.2),=17.17﹣10,=7.17;(33)5.29×9+5.29,=5.29×(9+1),=5.29×10,=52.9;(34)16.8×10.1,=16.8×10+16.8×0.1,=168+1.68,=169.68;(35)2.74×9.5+5×0.274,=2.74×9.5+0.5×2.74,=2.74×(9.5+0.5),=2.74×10,=27.4;(36)0.36+9.6÷3.2,=0.36+3,=3.36(37)3.75×25+6.25×25,=25×(3.75+6.25),=25×10,=250;(38)25.46﹣8.23﹣1.76,=25.46﹣(8.23+1.76),=25.46﹣9.99=15.45;(39)2.9+7.1×10,=2.9+71,=73.9;(40)1.25×32×0.25=(1.25×8)×(4×0.25),=10×1,=1.(41)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;(42)0.25×3.2×1.25,=0.25×4×0.8×1.25,=(0.25×4)×(0.8×1.25),=1×1,=1;(43)9.99×1.01,=(10﹣0.01)×1.01,=10.1﹣0.0101,=10.0899;(44)4.63×1.4+46.3×0.86,=46.3×0.14+46.3×0.86,=46.3×(0.14+0.86),=46.3×1,=46.3;(45)17.5÷0.8÷12.5,=17.5÷(0.8×12.5),=17.5÷1,=17.5;(46)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,=1110.6(47)2.9×99+2.9=(99+1)×2.9,=100×2.9,=290;(48)25×11.2×4=25×4×11.2,=100×11.2,=1120;(49)23.25﹣6.75﹣3.25=23.25﹣(6.75+3.25),=23.25﹣10,=13.25
(50)125×3.2×2.5,=125×8×0.4×2.5,=(125×8)×(0.4×2.5),=1000×1,=1000;(51)3.6×10.1,=3.6×(10+0.1),=3.6×10+3.6×0.1,=36+0.36,=36.36;(52)5.8×2.7+0.58×73,=5.8×2.7+5.8×7.3,=5.8×(2.7+7.3),=5.8×10,=58;(53)3.6+6.4×1.8,=3.6+11.52,=15.12;(54)(1.48+3.02)÷(3.6×0.5),=4.5÷1.8,=2.5;(55)(36.7﹣4.9)×101﹣31.8,=31.8×101﹣31.8,=31.8×(101﹣1),=31.8×100,=3180(56)6.33×101﹣6.33=6.33×(101﹣1),=6.33×100,=633;(57)35.6﹣5×1.73,=35.6﹣8.65,=26.95;(58)1.6×55.4﹣55.4×0.6,=55.4×(1.6﹣0.6),=55.4×1,=55.4;(59)17.68÷5.2+2.7×1.5,=3.4+4.05,=7.45(60)1.08×0.8÷0.27=1.08÷0.27×0.8,=4×0.8,=3.2;(61)102×0.45=(100+2)×0.45,=100×0.45+2×0.45,=45+0.9,=45.9;(62)22.78÷1.25÷0.8=22.78÷(1.25×0.8),=22.78÷1,=22.78;(63)0.34×101﹣0.34=(101﹣1)×0.34,=100×0.34,=34(64)0.125×32×2.5,=(0.125×8)×(4×2.5),=1×10,=10;(65)0.8×6.3﹣0.8×3.8,=0.8×(6.3﹣3.8),=0.8×2.5,=2;(66)504÷3.2×2.08,=157.5×2.08,=327.6;(67)(20﹣0.8×9)×5.7,=(20﹣7.2)×5.7,=12.8×5.7,=72.96(68)2.4×1.5+3.6÷1.5,=3.6+2.4,=6;(69)7.38﹣5.14+3.62﹣2.86,=(7.38+3.62)﹣(5.14+2.86),=11﹣8,=3;(70)0.12×1.8+8.2×0.12,=0.12×(1.8+8.2),=0.12×10,=1.2;(71)5.4÷[0.51÷(1.2﹣1.03)],=5.4÷[0.51÷0.17],=5.4÷3,=1.8;(72)[(8.1﹣5.6)×0.9﹣1.05]÷0.04,=[2.5×0.9﹣1.05]÷0.04,=[2.25﹣1.05]÷0.04,=1.2÷0.04,=30(73)10.8﹣0.8÷(0.35+0.05),=10.8﹣0.8÷0.4,=10.8﹣2,=8.8;(74)8×[1÷(2.3﹣2.25)],=8×[1÷0.05],=8×20,=160;(75)2.64×9.9+0.264,=0.264×99+0.264,=0.264×(99+1),=0.264×100,=26.4;(76)4.52+0.61+1.39+6.48=(4.52+6.48)+(0.61+1.39),=11+2,=13;(77)4.27﹣(1.96﹣1.73)=4.27﹣0.23,=4.04;(78)(294.4﹣19.2×6)÷(6+8)=(294.4﹣115.2)÷14,=179.2÷14,=12.8;(79)12.5×0.76×0.4×8×2.5=(12.5×8)×(0.4×2.5)×0.76,=100×1×0.76,=76.(80)4.98+8.02×2.5,=4.98+20.25,=25.03;(81)60.8﹣40.8÷2.5,=60.8﹣16.32,=44.48;(82)0.8×69.6×12.5,=(0.8×12.5)×69.6,=10×69.6,=696;(83)4.98×99+4.9,=493.02+4.9,=497.92;(84)6.48÷3.2÷2.5,=6.48÷(3.2×2.5),=6.48÷8,=0.81;(85)1.2×7.6+7.6×6.8,=7.6×(1.2+6.8),=7.6×8,=60.8(86)(9.4﹣5.8)×2.07,=3.6×2.07,=7.452;(87)12.54﹣4.56﹣3.44﹣1.54,=(12.54﹣1.54)﹣(4.56+3.44),=11﹣8,=3;(88)(9.36×5+9.36+9.36×2)×1.25,=9.36×(5+2+1)×1.25,=9.36×8×1.25,=9.36×(8×1.25),=93.6;(89)7.236÷0.18﹣14.3×0.02,=40.2﹣0.286,=39.914.(90)9.6÷0.4×0.25,=24×0.25,=6;(91)29.7÷(5.85÷0.65),=29.7÷9,=3.3;(92)7.4×9.9,=7.4×(10﹣0.1),=7.4×10﹣7.4×0.1,=74﹣0.74,=73.26;(93)3.84﹣2.7×0.64,=3.84﹣1.728,=2.112;(94)8.68﹣8.68÷0.56×0.5,=8.68﹣15.5×0.5,=8.68﹣7.75,=0.93;(95)4.7×4.7+4.7+4.3×4.7,=4.7×(4.7+4.3+1),=4.7×10,=47(96)2.72÷[(8.2﹣6.5)×0.5]=2.72÷[1.7×0.5],=2.72÷0.85,=3.2;(97)9.12+9.12×9﹣60.2=(1+9)×9.12﹣60.2,=10×9.12﹣60.2,=91.2﹣60.2,=31;(98)28.4÷0.4÷0.25=28.4÷(0.4×0.25),=28.4÷0.1,=284;(99)27.36﹣27.36÷7.6=27.6﹣3.6,=24(100)3.25×0.45+6.75×0.45,=0.45×(3.25+6.75),=0.45×10,=4.5;(101)31.5﹣24.5÷3.5,=31.5﹣7,=24.5;(102)7.5×102,=7.5×(100+2),=7.5×100+7.5×2,=750+15,=765;(103)6.3+3.7×2.8,=6.3+10.36,=16.66.(104)2.15+8.73+1.27+7.85=(2.15+7.85)+(8.73+1.27),=10+10,=20;(105)11.87﹣(8.2+1.87),=11.87﹣1.87﹣8.2,=10﹣8.2,=1.8;(106)5.42﹣3.87﹣1.13,=5.42﹣5,=0.42;(107)4.38﹣1.56+0.62﹣0.44,=(4.38+0.62)﹣(1.56+0.44),=5﹣2,=3;(108)0.4×270×2.5,=(0.4×2.5)×270,=270;(109)(40+1.25)×8,=40×8+1.25×8,=320+10,=330;(110)(12.5﹣0.05)×8,=12.5×8﹣0.05×8,=100﹣0.4,=99.6;(111)2.6×8.5+8.5×7.4,=(2.6+7.4)×8.5,=85;(112)9.9×6.9﹣6.9×3.9,=(9.9﹣3.9)×6.9,=6×6.9,=41.4;(113)5.6×99+5.6,=5.6×(99+1),=560;(114)2.5×(1.9+1.9+1.9+1.9),=2.5×4×1.9,=10×1.9,=19;(115)7.2÷1.25÷8,=7.2÷8÷1.25,=0.9÷1.25,=0.72.(116)52.4﹣(15+0.6)÷1.6,=52.4﹣15.6÷1.6,=52.4﹣9.75,=42.65;(117)9.87×99+9.87,=9.87×(99+1),=987;(118)46.8÷0.9÷0.4,=46.8÷(0.9×0.4),=46.8÷0.36,=130;(119)5.5×17.3+6.7×5.5,=5.5×(17.3+6.7),=5.5×24,=132(120)99×4.2+4.2=4.2×(99+1),=4.2×100,=420;(121)0.25×1.25×3.2=0.25×1.25×(4×0.8),=0.25×4×(1.25×0.8),=1×1,=1;(122)6.4×14+15×6.4+6.4=6.4×(14+15+1),=6.4×30,=192;(123)(1.3+1.3×0.125×8)÷(80﹣77.4)=(1.3+1.3×1)÷2.6,=2.6÷2.6,=1;(124)4×(25+2.5+0.25)÷111=(4×25+4×2.5+4×0.25)÷111,=(100+10+1)÷111,=111÷111,=1;(125)6.25÷[(17.2﹣3.6×4.5)÷0.32]=6.25÷[(17.2﹣16.2)÷0.32],=6.25÷(1÷0.32),=6.25÷3.125,=2(126)28.4×99+28.4,=28.4×(99+1),=28.4×100,=2840.(127)0.94×2.5﹣0.45,=2.35﹣0.45,=1.9.(128)4×0.8×12.5×2.5,=(4×2.5)×(0.8×12.5),=10×10,=100.(129)17.5÷0.25×17+13,=70×17+13,=1190+13,=1203(130)10.1×87,=(10+0.1)×87,=87+8.7,=95.7;(131)2.3+3.19÷(22﹣19.8),=2.3+3.19÷2.2,=2.3+1.45,=3.75;(132)1.25×7.2,=1.25×8×0.9,=10×0.9,=9(133)9.1﹣1.2÷6﹣6.24=9.1﹣0.2﹣6.24,=8.9﹣6.24,=2.66;(134)7.3+12.8﹣3.8×2.3=20.1﹣8.74,=11.36;(135)(5.36+7.64)÷13×100=13÷13×100,=100;(136)7.575÷[(5.63﹣1.88)×0.2]=7.575÷[3.75×0.2],=7.575÷0.75,=10.1(137)7.5﹣(5.5+1.24),=7.5﹣5.5﹣1.24,=2﹣1.24,=0.76;(138)0.26+15.68+9.74+2.32,=(0.26+9.74)+(15.68+2.32),=10+18,=28;(139)13.26+9.55﹣3.26,=13.26﹣3.26+9.55,=10+9.55,=19.55;(140)6.1+3.9﹣6.1+3.9,=6.1﹣6.1+(3.9+3.9),=0+7.8,=7.8(141)31.7÷0.63≈50.32;(142)2.4×1.5+3.6÷1.5=3.6+2.4,=6;(143)0.32×0.25+0.08÷4=0.08+0.08÷4,=0.08+0.02,=0.08+0.02,=0.1;(144)(9.6+1.48÷3.7)÷8=(9.6+0.4)÷8,=10÷8,=1.25;(145)5.8÷[4×(1.34﹣0.14)]=5.8÷[4×1.2],=5.8÷4.8,≈1.21;(146)5.4÷[0.51÷(1.2﹣1.03)]=5.4÷[0.51÷0.17],=5.4÷3,=1.8(147)21.35﹣3.25﹣16.75,=21.35﹣(3.25+16.75),=21.35﹣20,=1.35;(148)33.02﹣(148.4﹣90.85)÷2.5,=33.02﹣57.55÷2.5,=33.02﹣23.02,=10;(149)32×2.5×0.125,=4×8×2.5×0.125,=(4×2.5)×(8×0.125),=10×1,=10;(150)18.1+(3﹣0.299÷0.23)×1,=18.1+(3﹣1.3)×1,=18.1+1.7×1,=18.1+1.7,=19.8(151)67﹣(2.98+0.67),=67﹣3.65,=63.35;(152)8×16﹣73.8×6,=128+442.8,=570.8;(153)(45+14)÷73+710,=59÷73+710,=+710,=710(154)13.7×0.125×8,=13.7×(0.125×8),=13.7×1,=13.7;(155)0.8×[13﹣(3.12+5.28)],=0.8×[13﹣8.4],=0.8×4.6,=3.68;(156)102×0.56,=(100+2)×0.56,=100×0.56+2×0.56,=56+1.12,=57.12;(157)1.53×1.7+0.47×1.7,=(1.53+0.47)×1.7,=2×1.7,=3.4(158)5.18+0.73+0.82,.=(5.18+0.82)+0.73,=6+0.73,=6.73;(159)0.75×1.8÷1.5,=1.35÷1.5,=0.9;(160)12.5×7.1×0.8,=(12.5×0.8)×7.1,=10×7.1,=71;(160)6.12×99+6.12,=6.12×(99+1),=6.12×100,=612;(162)8.6÷0.86+8×0.35,=10+2.8,=12.8;(163)5.6×(18.5﹣8.5÷0.5),=5.6×(18.5﹣17),=5.6×1.5,=8.4(164)0.125×4.78×80,=0.125×4.78×8×10,=(0.125×8)×(4.78×10),=1×47.8,=47.8;(165)2.8×3.6+1.4×2.8,=2.8×(3.6+1.4),=2.8×5,=14;(166)(0.4+40)×2.5,=0.4×2.5+40×2.5,=1+100,=101;(167)78.7﹣17.7×3.6,=78.7﹣63.72,=14.98;(168)18÷[0.3×(8﹣6.5)],=18÷[0.3×1.5],=18÷0.45,=40;(169)12.7+12.5+0.5,=12.7+(12.5+0.5),=12.7+13,=25.7(170)91÷2.6÷0.05,=35÷0.05,=700;(171)6.3×3.7+6.3×6.3,=6.3×(3.7+6.3),=6.3×10,=63;(172)(3.7+1.7×0.4)÷2.5,=(3.7+0.68)÷2.5,=4.38÷2.5,=1.752;(173)7.28+3.2÷2.5,=7.28+1.28,=8.56;(174)0.74+0.9×7.4,=(1+9)×0.74,=10×0.74,=7.4;(175)7.8÷0.125÷0.8,=7.8÷(0.125×0.8),=7.8÷0.1,=78(176)37.5÷[0.3×(1.34﹣0.84)],=37.5÷[0.3×0.5],=37.5÷0.15,=250;(177)(2.5+27.75÷1.5)×1.6,=(2.5+18.5)×1.6,=21×1.6,=33.6(178)6.21﹣3.8+2.2,=2.41+2.2,=4.61;(179)6.03+3.7+2.97,=(6.03+2.97)+3.7,=9+3.7,=12.7;(180)17.43﹣6.57﹣2.43,=17.43﹣(6.57+2.43),=17.43﹣9,=8.43;(181)20.47﹣(1.47+6.8),=20.47﹣1.47﹣6.8,=19﹣6.8,=12.2;(182)13.26+4.71+3.47+5.29,=(13.26+3.47)+(4.71+5.29),=16.73+10,=26.73;(183)22.74+8.68﹣13.74,=(22.74﹣13.74)+8.68,=9+8.68,=17.68(184)10÷0.2÷2.5,=10÷(0.2×2.5),=10÷0.5,=20;(185)64×4.5+3.6×45,=6.4×45+3.6×45,=(6.4+3.6)×45,=10×45,=450;(186)1.25×3.2×0.8,=(1.25×0.8)×3.2,=1×3.2,=3.2;(187)14.5×102,=14.5×(100+2),=14.5×100+14.5×2,=1450+29,=1479;(188)14.64+3.7×2.8,=14.64+10.36,=25;(189)8.4÷0.21÷0.5,=40÷0.5,=80(190)0.125×9×8×0.3,=(0.125×8)×(9×8),=1×72,=72;(191)4.62÷5÷0.66,=4.62÷(5×0.66),=4.62÷3.3,=1.4;(192)5.78×2.3+5.78+5.78×6.7,=5.78×(2.3+1+6.7),=5.78×10,=57.8;(193)7.75×[20÷(3.24﹣3.04)],=7.75×[20÷0.2],=7.75×100,=775(194)1.25×0.5×8×0.2,=(1.25×8)×(0.5×0.2),=10×0.1,=1;(195)0.97×9+0.97,=0.97×(9+1),=0.97×10,=9.7;(196)5.4÷[3×﹙3.8﹣2.9﹚],=5.4÷[3×0.9],=5.4÷2.7,=2
(197)0.4×(3.2﹣0.8)÷0.15,=0.4×2.4÷0.15,=0.96÷0.15,=6.4;(198)5.7+1.9×0.2÷7.6,=5.7+0.38÷7.6,=5.7+0.05,=5.75;(199)32.4×6.3+32.4×3.7,=32.4×(6.3+3.7),=32.4×10,=324;(200)18.2﹣10.6×(0.9﹣0.75),=18.2﹣10.6×0.15,=18.2﹣1.59,=16.61;(201)0.25×3.85×40,=0.25×40×3.85,=10×3.85,=38.5;(202)1.46×3.5+3.5×4.54,=3.5×(1.46+4.54),=3.5×6,=21(203)7×12.5×0.8,=7×(12.5×0.8),=7×10,=70;(204)4.7×3.6+4.7×6.4,=4.7×(3.6+6.4),=4.7×10,=47;(205)1.45×[(2.8+4.4)÷2.4],=1.45×[7.2÷2.4],=1.45×3,=4.35(206)4.2×(6.18﹣3.03)+6.3,=4.2×3.15+6.3,=13.23+6.3,=19.53;(207)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;(208)0.6×[(5﹣0.68)÷1.2],=0.6×[4.32÷1.2],=0.6×3.6,=2.16;(209)2.7÷4+6.3×0.25,=2.7×0.25+6.3×0.25,=(2.7+6.3)×0.25,=9×0.25,=2.25;(210)(6.02+2.8)÷0.4﹣2.05,=8.82÷0.4﹣2.05,=22.05﹣2.05,=20;(211)3.08×3.5+6.2×3.08+3.08×0.3,=(3.5+6.2+0.3)×3.08,=10×3.08,=30.8(212)2.3+3.91÷(22﹣19.7),=2.3+3.91÷2.3,=2.3+1.7,=4;(213)21.6÷[64.8﹣(48.6﹣2.7×2)],=21.6÷[64.8﹣(48.6﹣5.4)],=21.6÷[64.8﹣43.2],=21.6÷21.6,=1(214)93.6×3.6+1.4×3.6,=(93.6+1.4)×3.6,=95×3.6,=(100﹣5)×3.6,=100×3.6﹣5×3.6,=360﹣18,=342;(215)0.25×0.8×0.125×0.4,=(0.25×0.4)×(0.8×0.125),=0.1×0.1,=0.01;(216)2.7×1.5﹣2.7,=2.7×(1.5﹣1),=2.7×0.5,=1.35;(217)9.08+5.45+11.92+4.55,=(9.08+11.92)+(5.45+4.55),=21+10,=31;(218)1.25×30×1.2×0.8,=(1.25×0.8)×(30×1.2),=1×36,=36(219)0.6+0.94﹣0.208,=1.54﹣0.208,=1.332;(220)4.85×1.25×8,=4.85×(1.25×8),=4.85×10,=48.5;(221)(64﹣22.4÷1.4)×1.2,=(64﹣16)×1.2,=48×1.2,=57.6;(222)18.3﹣6.25﹣3.75,=18.3﹣(6.25+3.75),=18.3﹣10,=8.3;(223)2.8×3.6+1.4×2.8,=2.8×(3.6+1.4),=2.8×5,=14;(224)6.6÷[14.5﹣(1.7+1.8)],=6.6÷[14.5﹣3.5],=6.6÷11,=0.6(225)0.25×9.87×4,=0.25×4×9.87,=1×9.87,=9.87;(226)7×2.1+10.8,=77.07+10.8,=87.87;(227)8.45﹣0.45×0.1,=8.45﹣0.045,=8.405;(228)0.73×102,=0.73×(100+2),=0.73×100+0.73×2,=73+1.46,=74.46;(229)7.8×5.6+2.3×4.4,=43.68+10.12,=53.8;(230)76.3×27﹣76.3×17=76.3×(27﹣17),=76.3×10,=763.(231)7.05×23.7+7.05×76.3=(23.7+76.3)×7.05,=100×7.05,=705(232)[(7.6﹣5.2)÷0.4+2.54]×32,=[2.4÷0.4+2.54]×32,=[6+2.54]×32,=8.54×32,=273.28(233)17.68÷5.2+2.7×1.5,=3.4+4.05,=7.45;(234)35.6﹣5×1.73,=35.6﹣8.65,=26.95;(235)(1.1﹣0.78)×(2.7﹣1.95),=0.32×0.75,=0.24(236)1.3×0.75×4,=1.3×3×0.25×4,=1.3×3×(0.25×4),=3.9×1,=3.9;(237)1.08÷1.8×1.2,=0.6×1.2,=0.72;(238)50.4×1.9﹣1.8,=95.76﹣1.8,=93.96;(239)0.82×0.25+1.18×0.25,=(0.82+1.18)×0.25,=2×0.25,=0.5(240)8.5×[(2.36+2.42)÷0.25],=8.5×[4.78÷0.25],=8.5×19.12,=162.52;(241)3.9÷[(1.3+0.6)×6﹣3.6],=3.9÷[1.3×0.6+0.6×6﹣3.6],=3.9÷[0.78+3.6﹣3.6],=3.9÷0.78,=5;
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