小数乘除法计算题2010

小数乘除法计算题2010 0.96?3= 五年级小数乘除法计算题 1.47?0.7= 一、计算题(30分) 5.4?6= 1、直接写出得数。 0.16.5×10= 0.45×2.5, 0.56×100= 0.8×1.25, 3.78×100= 0.3×3.6, 4?0.8= 0.3×0.3, 3.215×100= 10×0.07, 0.8×10= 4.08×100= 0.3×1.4, 1.1×0.2= 0.05×7, 0.6×0.8= 0.92×0.4, 3×0.9= 0.2×0.26, 2.5×0.4= 0.14×4, 3.6×0.4= 0.02×0.1, 12.5×8= 1.2×0.3, 50×0.04= 80×0.3= 0.2×0.4, 1.1×9= 8.2，1.8, 0.16×5, 100,35.22, 1.78，2.2= 2.3×4, 9.6?0.6= 2.5×0.4, 1.2×0.5-0.4= 2.4×5, 0.7?0.01= 0.22×4, 2.5×0.4= 3.25×0, 3.9= 12,0.9,0.52, 1.25×8?1.25= 3.99×1, 6.6?0.66= 0×3.52, 5.37×0+4.63= 12.5×8, 3.9，2.03, 8?10= 10-1.8-7.2= 4.2?3.5, 0.43+3.57= 1.6+2.4×0.3= 2.5×4×12= 2.14,0.9, 0.9×0.8= 27，456，73= 7.5x-3x= 0.3×0.3= a+3a+7a== 7.2，2.8, 1.05×100= 0.9?0.01, 1?0.5= 12?0.3= 1.8×0.4= 2.87?0.7, 5.5?0.55= 13?4, 0.08×100= 0.96?0.3, 2.2?0.11= 1.5×0.4, 5.46，4.54= 7?0.25, 12.5×0.8= 2.5×0.7×0.8= 0.35×0.3= 1.4×5= 8,2.5, 2.8×4= 16?1.6, 19.6?4= 5.6×1.01= 22.5×4= 8×(2.5，0.25), 0.36，0.64, 2、用竖式计算 64.32?16, 0.396?1.2= 4.2?0.1, 0.756?0.36= 72.8?0.8, 15.6×13= 8.4?4.2, 0.18×15= 0.025×14= 13.8，9.9, 3.06×36= 2.4×2.5, 0.04×0.12, 0.05×0.8, 3.84×2.6? 2.56,0.37, 5.76×3,(保留一位小数) 1.25×0.8×0.5, 7.15×22 12×2.5, 90.75?3.3 1.23×3, 3.68×0.25 3.2?1.6, 16.9?0.13 3.5，3.5×3, 1.55?3.9 19.6?2, 3.7×0.016 8.8?2.2= 13.76×0.8= 5.2×0.6 0.75×4, 8.4×1.3 (1.5，0.25)×4, 6.4×0.5 0.5×0.8= 4.48×0.4 8.4×0.2= 5.25×5 1.6×0.2, 35.4×4.2 7.2×0.3= 0.042×0.54 2.8×0.3, 0.76×0.32 0.25×0.046 0.9?0.15= 2.52×3.4 2.5×1.25×0.32 1.08×25 3.8×10.1 2.5×(3.8×0.04) 0.16, 0.12×0.5× 7.69×101 4.8×0.25, 3.8×10.1 0.125×1.4?(保留两位小数) 0.25×39+0.25 2.5?0.7=(保留三位小数) 0.125×72 10.1?3.3=(商用循环小数) 46×0.33+54×0.33 10.75?12.5=(用乘法验算) (8×5.27)×1.25 3.25×9.04=(用除法验算) 6.81+6.81×99 0.25×185×40 3、脱式计算(能简算的要简算) 6.8×0.75?0.5 3.75?0.125–2.75 2.5×7.1×4 1.53+23.4?7.2 16.12×99，16.12 9.5×99 5.2×0.9，0.9 13.5×0.98 7.28×99+7.28 12.5×8.8 4.3×50×0.2 二、解方程: 64,2.64×0.5 0.43×0.28= 26×15.7，15.7×24 6.45×0.73= (2.275 4.6×0.6= ，0.625)×0.28 8.9×0.05= 3.94+34.3×0.2 3.08×0.43= 1.2×(9.6?2.4)?4.8 1.5×26.7= 8.9×1.1×4.7 5.22?29= 2.7×5.4×3.9 18.72?3.6= 3.6×9.85-5.46 13.95?3.1= 8.05×3.4+7.6 6.58×4.5×0.9 五年级总复习题 2.8×0.5+1.58 小学五年级上学期数学期末检测32，4.9,0.9 题 4.8,4.8×0.5 一、直接写出得数 (1.25,0.125)×8 8?10 4.8×100.1 10-1.8-7.2 56.5×99，56.5 0.43+3.57 2.5×4×12 7.09×10.8,0.8×7.09 0.9×0.8 12.5×0.4×2.5×8 7.28×99+7.28 2.37×6.3+2.37×3.7 4.3×50×0.2 6.4×0.5 1.05×100 4.48×0.4 1?0.5 5.25×5 0.96?3 35.4×4.2 1.47?0.7 0.042×0.54 5.4?6 0.76×0.32 8.8×0.1 5.6?3.5 0.49?1.4 三、计算 4.8×0.25, 1、用竖式计算 0.125×1.4?(保留两位小数) 7.15×22 90.75?3.3 3.25×9.04=(用除法验算) 3.68×0.25 二、脱式计算(能简算的要简算) 2、解下列方程 18.76×9.9，18.76 3、用简便方法计算下面各题。 3.52?2.5?0.4 6.81+6.81×99 3.9,4.1，6.1,5.9 0.25×185×40 0.89×100.1 4、脱式计算 9.6?0.8?0.4 3.94+34.3×0.2 4.2×99，4.2 2.08×(9.6?2.4)?4.8 3.65×10.1 一、用竖式计算 17.8?(1.78×4) 0.396?1.2= 1.25×2.5×32 0.756?0.36= 3.2×0.25×12.5 15.6×13= 15.2?0.25?4 3.06×36= 146.5,(23，46.5) (保留一位小数) 3.83×4.56，3.83×5.44 0.18×15= 4.36×12.5×8 0.025×14= 9.7×99，9.7 5.76×3, 0.65×101 0.04×0.12, 27.5×3.7,7.5×3.7 3.84×2.6? 8.54?2.5?0.4 7.15×22 1.08×25 90.75?3.3 2.52×3.4 3.68×0.25 (45.9,32.7)?8?0.125 16.9?0.13 3.14×0.68，31.4×0.032 3.7×0.016 5.6?1.25?0.8?2.5?0.4 13.76×0.8= 7.2×0.2，2.4×1.4 5.2×0.6 8.9×1.01 8.4×1.3 70?28 7.74×(2.8,1.3)，1.5×2.2 7.6×0.8，0.2×7.6 3.9×2.7，3.9×7.3 0.85×199 18,1.8?0.125?0.8 0.25×8.5×4 12.7×9.9，1.27 0.32×403 21×(9.3,3.7),5.6 1.28×8.6，0.72×8.6 15.02-6.8-1.02 12.5×0.96×0.8 5.4×11-5.4 10.4,9.6×0.5 2.3×16+2.3×23+2.3 4.9?1.4 9.43-(6.28-1.57) 0.8×(4.3×1.25) 3.65×4.7,36.5×0.37 3.12，3.12×99 46×57，23×86 28.6×101,28.3 13.7×0.25,3.7?4 2.5×2.4 2.22×9.9+6.66×6.7 0.86×15.7,0.86×14.7 101×0.87-0.91×87 2.31×1.2×0.5 10.7×16.1-15.1×10.7 63.4?2.5?0.4 0.79×199 3.9?(1.3×5) 1.76+0.195+3.24 14,7.32,2.68 4.8+8.63+5.2+0.37 5.93+0.19+2.81 2.64，8.67，7.36，11.33 2.35+1.713+0.287+7.65 2.7?45 1.57+0.245+7.43 15?(0.15×0.4) 6.02+3.6+1.98 (2.5,0.25)×0.4 7.5，4.9,6.5 9.16×1.5,0.5×9.16 8,2.45,1.5 3.6,3.6×0.5 0.134+2.66+0.866 15?0.25 1.27+3.9+0.73+16.1 0.35×1.25×2×0.8 2.71，6.3 1.29，3.7，32.4×0.9，0.1×32.4 3.07,0.38,1.62 (7.7，1.54)?0.7 3.25，1.79,0.59，1.75 0.25×0.046 23.4,0.8,13.4,7.2 2.5×7.1×4 3.2，0.36，4.8，1.64 16.12×99，16.12 1.23，3.4,0.23，6.6 5.2×0.9，0.9 0.25×36 0.12×0.5×0.16, 2.4×102 7.28×99+7.28 12.7,(3.7，0.84) 4.3×50×0.2 36.54,1.76,4.54 64,2.64×0.5 0.25×0.73×5 9.5×99 26×15.7，15.7×24 小数乘除法计算题练习(2、3周: (2.275 小数乘法) ，0.625)×0.28 1、直接写出得数。 1.2×(9.6?2.4)?4.8 0.45×2.5= 12.5×8.8 0.8×1.25= 8.9×1.1×4.7 0.3×3.6= 2.7×5.4×3.9 0.3×0.3= 3.6×9.85-5.46 10×0.07= 3.94+34.3×0.2 0.3×1.4= 8.05×3.4+7.6 0.05×7= 6.58×4.5×0.9 0.92×0.4= 2.8×0.5+1.58 0.2×0.26= (1.25,0.125)×8 0.14×4= 0.02×0.1= 4.8×100.1 1.2×0.3= 56.5×99，56.5 0.2×0.4= 7.09×10.8,0.8×7.09 8.2，1.8= 3.8×10.1 100,35.22= 6.81+6.81×99 2.3×4= 0.25×185×40 2.5×0.4= 4.4×0.8,3.4×0.8 2.4×5= 7.69×101 0.22×4= (9.37+9(37+9(37+9(37)× 3.25×108= 2(5 0.9,0.52= 4(2.×1.，1.×1.75 3.99×1= 0.125×72 20×3.52= 2.37×6.3+2.37×3.7 12.5×8= 2.5×1.25×0.32 8?10= 2.5×(3.8×0.04) 10-1.8-7.2= 13.5×0.98 0.43+3.57= 0.25×39+0.25 2.5×4×12= 46×0.33+54×0.33 0.9×0.8= 6.8×0.75?0.5 7.5x-3x= 1.53+23.4?7.2 96?3= (8×5.27) 1.47?0.7= ×1.25 5.4?6= 6.81+6.81×99 0.16.5×10= 0.25×185×40 0.56×100= 3.75?0.125–2.75 3.78×100= 2.5×0.7×0.8= 4?0.8= 8,2.5, 3.215×100= 16?1.6, 0.8×10= 8×(2.5，0.25), 4.08×100= 0.36，0.64, 1.1×0.2= 64.32?16, 0.6×0.8= 4.2?0.1, 3×0.9= 72.8?0.8, 2.5×0.4= 8.4?4.2, 3.6×0.4= 12.5×8= 13.8，9.9, 50×0.04= 2.4×2.5, 80×0.3= 0.05×0.8, 1.1×9= 2.56,0.37, 0.16×5, 1.25×0.8×0.5, 1.78，2.2= 12×2.5, 9.6?0.6= 1.23×3, 1.2×0.5-0.4= 3.2?1.6, 0.7?0.01= 3.5，3.5×3, 2.5×0.4= 19.6?2, 12,3.9= 8.8?2.2= 1.25×8?1.25= 6.6?0.66= 0.75×4, 5.37×0+4.63= (1.5，0.25)×4, 3.9，2.03, 0.5×0.8= 8.4×0.2= 4.2?3.5, 1.6+2.4×0.3= 1.6×0.2, 7.2×0.3= 2.14,0.9, 2.8×0.3, 27，456，73= 0.9?0.15= 0.3×0.3= 1.8×0.4= 7.2，2.8, 5.5?0.55= 0.9?0.01, 0.08×100= 12?0.3= 2.2?0.11= 2.87?0.7, 5.46，4.54= 13?4, 12.5×0.8= 0.96?0.3, 0.35×0.3= 1.5×0.4, 1.4×5= 2.8×4= 2.5?0.7=(保留三位小数) 19.6?4= 10.1?3.3=(商用循环小数表示) 22.5×4= 3、脱式计算(能简算的要简算) 7?0.25, 2.5×7.1×4= 5.6×1.01= 16.12×99，16.12= 12.5+53.162= 5.2×0.9，0.9= 2、用竖式计算 7.28×99+7.28= 15.6×13= 4.3×50×0.2= 0.18×15= 64,2.64×0.5=2 0.025×14= 6×15.7，15.7×24= 06×36= (2.275，0.625)×0.28= 0.04×0.12, 3.94+34.3×0.2= 3.84×2.6? 1.2×(9.6?2.4)?4.8= (保留一位小数) 8.9×1.1×4.7= 5.76×3, 2.7×5.4×3.9= 7.15×22= 3.6×9.85-5.6= 90.75?3.3= 8.05×3.4+7.6= 3.68×0.25= 6.58×4.5×0.9= 16.9?0.13= 2.8×0.5+1.58= 1.55?3.9= 4.85+0.35?1.4= 3.7×0.016= 8.7×17.4-8.7×7.4= 13.76×0.8= (1.25,0.125)×8= 5.2×0.6 32，4.9,0.9= 8.4×1.3= 4.8,4.8×0.5= 6.4×0.5= 4.8×100.1= 4.48×0.4= 56.5×99，56.5= 5.25×5= 7.09×10.8,0.8×7.09= 35.4×4.2= 0.042×0.54= 12.5×0.4×2.5×8= 0.76×0.32= 0.87×3.16+4.64= 0.25×0.046= 9.5×101= 2.52×3.4= 0.68?(5.2-3.5)×1.25= 1.08×25= 2(13.×0.×8257= 0.12×0.5×0.16,(保留两位小数) 40.5?0.81×0.18= 3.25×9.04=(用除法验算) 4.8×(15?2.4)= 4.8×0.25, 6.81+6.81×99= 0.125×1.4? 0.25×185×40= 10.75?12.5=(用乘法验算) 4.4×0.8,3.4×0.8= 4.268×1.7 (9.37+9(37+9(37+9(37)×2(5= 57×5.7 4(2.×1.，1.×1.75= 9.46×2.85 2.37×6.3+2.37×3.7= 17.8×6.4 2.5×1.25×0.32= 1.5×4.9 3.8×10.1= 2.5×0.88 2.5×(3.8×0.04=) 5.555×5.2 7.69×101= 2.22×3.33 3.8×10.1= 7.658×85 0.25×39+0.25= 36.02×0.3 0.125×72= 56.78×8 46×0.33+54×0.33= 除法: (8×5.27)×1.25= 85.44?16 6.81+6.81×99= 42.84?7 0.25×185×40= 101.7?9 6.8×0.75?0.5= 67.5?15 3.75?0.125–2.75= 230.4?6 1.53+23.4?7.2= 21.24?36 9.5×99= 0.736?23 13.5×0.98= 用竖式计算 12.5×8.8= 5.6×2.9 0.396?1.2= 3.77×1.8 0.756?0.36= 0.02×96 15.6×13= 5.22×0.3 0.18×15= 9.99×0.02 0.025×14= 4.67×0.9 3.06×36= 5×2.44 0.04×0.12, 1.666×6.1 3.84×2.6? 9.432×0.002 5.76×3, 5.6×6.5 (保留一位小数) 4.88×2.9 7.15×22 5.61×4.3 90.75?3.3 8.9×2.4 3.68×0.25 5.5×55 16.9?0.13 9.77×0.02 1.55?3.9 1.384×5.1 3.7×0.016 8.78×83 13.76×0.8= 2.6×61 5.2×0.6 0.059×0.2 8.4×1.3 (1.25,0.125)×8 6.4×0.5 4.8×100.1 4.48×0.4 56.5×99，56.5 5.25×5 6.81+6.81×99 35.4×4.2 0.25×185×40 0.042×0.54 6.8×0.75?0.5 0.76×0.32 3.75?0.125–2.75 0.25×0.046 1.53+23.4?7.2 2.52×3.4 9.5×99 1.08×25 13.5×0.98 0.12×0.5×0.16, 12.5×8.8 4.8×0.25, 二、解方程: 0.125×1.4?(保留两位小数) 13.7—x=5.29 2.5?0.7=(保留三位小数) 4.2×3—3x=5.1 10.1?3.3=(商用循环小数) (写出检验过程) 10.75?12.5=(用乘法验算) 20.5,4x=8.1 3.25×9.04=(用除法验算) 3.6x?1.2=9.75 3、脱式计算(能简算的要简算) 18×1.5,1.7x=13.4 18.5x,9.9x=1.721 2.5×7.1×4 9.2x+1.5x=32.1 16.12×99，16.12 7.2×5,8x=11.2 5.2×0.9，0.9 4x，3×0.7,6.5 7.28×99+7.28 (口算) 4.3×50×0.2 0.6×1.2= 64,2.64×0.5 0.84?0.6= 26×15.7，15.7×24 4.5×0.1= (2.275 15×0.4= ，0.625)×0.28 0.1×0.5= 3.94+34.3×0.2 2.8?7= 1.2×(9.6?2.4)?4.8 100?0.01= 8.9×1.1×4.7 1.4×3= 2.7×5.4×3.9 0.72?8= 3.6×9.85-5.46 6?0.03= 8.05×3.4+7.6 0.5×0.6= 6.58×4.5×0.9 40×0.9= 2.8×0.5+1.58 4?0.5= 32，4.9,0.9 7×2.1= 4.8,4.8×0.5 8.89+0.1= 24×0.25= 1025,1125?4.5×3.6 0.1?0.01= 12.25,3.1，0.85,6.17 2.4×0.8= (1.9,1.9×0.9)?(3.8,2.8) 9×0.4= 2.65×1.7，1.35×1.7 10×0.01= 列竖式计算，得数保留一位小数。 30.2-3.02= 1.2×1.4, 4.3-0.25= 0.37×8.4, 1-0.82= 3.14×2.8, 9.6?0.3= 2.6×0.01= 0.85×1.12, 0×25.4= 0.86×5.4, 4.8×0.4= 0.15×2.34, 7.2，2.8= 2.84×0.03, 12×2.5, 0.38×0.13, 2.63，0.37, 26.37?31, 0.7×16,16×0.2= 32?42, 0.96?0.3, 2.84×0.03, 1.5,4.5= 4.8?23, 2.5×0.4 0.382×0.13, 1.4×2.5×4, 列竖式计算 8,2.5, 1.64，2.35= 6?1.2= 8.65,6.31= 9.2?2.3= 28.448?14= 24?4，56?4, 0.58×250= 0.36，0.64, 12.5，3.6= 4?0.25= 10.88?34= 1.8×5= 10,7.64= 30×(200，3), 8.4?4.2= 1.86×7= 8×1.5, 13.88,6.29= 4.8?0.3= 926×0.15= 2.73，1.5×4, 8?500= 计算下面各题(能简算的要简算) 26.3，7.93= 7.05×23.7+7.05×76.3 23×7.06= 0.125×3.2×2.5 100.2,2.28= 12.81,(1.5+7.81) 44?9(精确到百分位) 8.7×2.6+6.4×8.7+8.7 三、计算(能简便的用简便方法 18?24= 计算) 43.68?26= 8×25×1(25×16 25.3?0.88= 4(04×250 0.1575?3.15= 45(55,(6(82，15(55) 0.612?1.8= 3(2×99，3(2 16.787?0.28 4.8×39，61×4(8 2.5×7.1×4 34(52,17(87,12(23 16.12×99，16.12 2(5×56+4(5×65 5.2×0.9，0.9 489×101,489 7.28×99+7.28 4(57+3(17+3(43+5(83 4.3×50×0.2 64,2.64×0.5 4(6×56，48×4(6,4(6×4 26×15.7，15.7×24 竖式计算: (2.275 18?24= 43.68?26= ，0.625)×0.28 25.3?0.88= 3.94+34.3×0.2 0.1575?3.15= 1.2×(9.6?2.4)?4.8 0.612?1.8= 8.9×1.1×4.7 16.787?0.28 2.7×5.4×3.9 (保留一位小数) 3.6×9.85-5.46 8.05×3.4+7.6 1、 6.58×4.5×0.9 算下面各题 2.8×0.5+1.58 2.36×0.22 32，4.9,0.9 2.8×4.58 4.8,4.8×0.5 3.57?4.2 2.5×(3.8×0.04) 82.8?36 7.69×101 45×2.46 3.6?0.24 3.8×10.1 0.25×39+0.25 382.5?45 0.125×72 6.4×5.48 46×0.33+54×0.33 2、 (8×5.27) 简便计算 ×1.25 3.6×2.5+7.5×3.6 6.81+6.81×99 2.5×1.2 0.25×185×40 0.125×32 6.8×0.75?0.5 4.3×0.9 3.75?0.125–2.75 6.5×102 1.53+23.4?7.2 3.25×99+3.25 1?0.5= 9.5×99 0.96?3= 13.5×0.98 1.47?0.7= 12.5×8.8 5.4?6= 五年级小数乘除法计算题复习 0.16.5×10= 一、计算题 0.56×100= 1、直接写出得数。 3.78×100= 0.45×2.5, 4?0.8= 0.8×1.25, 3.215×100= 0.3×3.6, 0.8×10= 0.3×0.3, 4.08×100= 10×0.07, 1.1×0.2= 0.6×0.8= 0.3×1.4, 3×0.9= 0.05×7, 2.5×0.4= 0.92×0.4, 3.6×0.4= 0.2×0.26, 2.5×40= 0.14×4, 50×0.04= 0.02×0.1, 80×0.3= 1.2×0.3, 1.1×9= 0.2×0.4, 0.16×5, 8.2，1.8, 1.78，2.2= 9.6?0.6= 100,35.22, 1.2×0.5-0.4= 2.3×4, 0.7?0.01= 2.5×0.4, 2.5×0.4= 2.4×5, 12,3.9= 0.22×4, 1.25×8?1.25= 3.25×0, 6.6?0.66= 0.9,0.52, 5.37×0+4.63= 3.99×1, 3.9，2.03, 0×3.52, 4.2?3.5, 12.5×8, 1.6+2.4×0.3= 8?10= 2.14,0.9, 10-1.8-7.2= 0.3×0.3= 0.43+3.57= 7.2，2.8, 2.5×4×12= 0.9?0.01, 0.9×0.8= 12?0.3= 1.05×100= 15.6×13= 2.87?0.7, 0.18×15= 13?4, 0.025×14= 0.96?0.3, 3.06×36= 7?0.25, 0.04×0.12, 2.5×0.7×0.8= 3.84×2.6? 8,2.5, 5.76×3, 16?1.6, (保留一位小数) 5.6×1.01= 7.15×22 8×(2.5，0.25), 90.75?3.3 0.36，0.64, 3.68×0.25 64.32?16, 16.9?0.13 4.2?0.1, 1.55?3.9 72.8?0.8, 3.7×0.016 13.76×0.8= 8.4?4.2, 5.2×0.6 13.8，9.9, 8.4×1.3 2.4×2.5, 6.4×0.5 0.05×0.8, 4.48×0.4 2.56,0.37, 5.25×5 1.25×0.8×0.5, 35.4×4.2 12×2.5, 0.042×0.54 0.76×0.32 1.23×3, 0.25×0.046 3.2?1.6, 2.52×3.4 3.5，3.5×3, 1.08×25 2.2?0.11= 0.12×0.5×0.16, 19.6?2, 4.8×0.25, 8.8?2.2= 0.125×1.4?(保留两位小数) (1.5，0.25)×4, 2.5?0.7=(保留三位小数) 0.5×0.8= 8.4×0.2= 10.1?3.3=(商用循环小数) 0.9?0.15= 10.75?12.5=(用乘法验算) 1.8×0.4= 3.25×9.04=(用除法验算) 5.5?0.55= 小数乖除法计算 2、脱式计算(能简算的要简算) 1(计算 2.5×7.1×4 0.396?1.2= 16.12×99，16.12 0.756?0.36= 56.78×8 5.2×0.9，0.9 除法: 2.8×0.5+1.58 85.44?16 32，4.9,0.9 42.84?7 (1.25,0.125)×8 101.7?9 4.8×100.1 67.5?15 56.5×99，56.5 230.4?6 7.09×10.8,0.8×7.09 21.24?36 数乘除法计算题 0.736?23 乘法: 43.5?12 5.6×2.9 35.21?7 3.77×1.8 39.6?24 0.02×96 6.21?0.03 5.22×0.3 210?1.4 9.99×0.02 51.3?0.27 4.67×0.9 91.2?3.8 5×2.44 0.756?0.18 1.666×6.1 0.66?0.3 9.432×0.002 11.97?1.5 5.6×6.5 69.6?2.9 4.88×2.9 38.4?0.8 5.61×4.3 15?0.06 8.9×2.4 (循环小数的用简便方法，除不5.5×55 尽保留2位小数): 9.77×0.02 用竖式计算 1.384×5.1 15.6×13= 8.78×83 0.18×15= 2.6×61 0.025×14= 0.059×0.2 3.06×36= 4.268×1.7 0.04×0.12, 57×5.7 3.84×2.6? 9.46×2.85 5.76×3, 17.8×6.4 (保留一位小数) 1.5×4.9 2.5×0.88 7.15×22 5.555×5.2 90.75?3.3 2.22×3.33 3.68×0.25 7.658×85 16.9?0.13 36.02×0.3 1.55?3.9 3.7×0.016 32，4.9,0.9 13.76×0.8= 4.8,4.8×0.5 5.2×0.6 (1.25,0.125)×8 8.4×1.3 4.8×100.1 6.4×0.5 56.5×99，56.5 4.48×0.4 7.09×10.8,0.8×7.09 5.25×5 4.85+0.35?1.4 35.4×4.2 8.7×17.4-8.7×7.4 0.042×0.54 12.5×0.4×2.5×8 0.76×0.32 0.87×3.16+4.64 0.25×0.046 9.5×101 2.52×3.4 0.68?(5.2-3.5)×1.25 1.08×25 40.5?0.81×0.18 0.12×0.5×0.16, 4.8×(15?2.4) 4.8×0.25, 6.81+6.81×99 0.125×1.4?(保留两位小数) 0.25×185×40 2.5?0.7=(保留三位小数) 4.4×0.8,3.4×0.8 10.1?3.3=(商用循环小数) (9.37+9(37+9(37+9(37)× 10.75?12.5=(用乘法验算) 2(52.37×6.3+2.37×3.7 3.25×9.04=(用除法验算) 2.5×1.25×0.32 3、脱式计算(能简算的要简算) 3.8×10.1 2.5×7.1×4 2.5×(3.8×0.04) 16.12×99，16.12 7.69×101 5.2×0.9，0.9 3.8×10.1 7.28×99+7.28 0.25×39+0.25 4.3×50×0.2 0.125×72 46×0.33+54×0.33 64,2.64×0.5 (8×5.27)×1.25 26×15.7，15.7×24 6.81+6.81×99 (2.275，0.625)×0.28 0.25×185×40 3.94+34.3×0.2 6.8×0.75?0.5 1.2×(9.6?2.4)?4.8 3.75?0.125–2.75 8.9×1.1×4.7 1.53+23.4?7.2 2.7×5.4×3.9 9.5×99 3.6×9.85-5.46 13.5×0.98 8.05×3.4+7.6 12.5×8.8 6.58×4.5×0.9 二、解方程: 2.8×0.5+1.58 54-X=24 7X=49 0.1×0.5= 126?X=42 2.8?7= 13+A=28.5 100?0.01= 2.4X=26.4 1.4×3= 0.72?8= 7.5x,3x=18 6?0.03= 5×1.3-2x=5.5 0.5×0.6= 24x+6x=63.6 40×0.9= 5.6x+4.4x=5.2 4?0.5= x，3.86=5.46 7×2.1= 17.89,x=12.89 8.89+0.1= 40.8，x=57.3 24×0.25= x,3.25=16 0.1?0.01= 2x，0.82,8.2 2.4×0.8= 3，0.5x,7 9×0.4= 7.8?x,2.6 10×0.01= 30.2-3.02= 80x?4,12 4.3-0.25= 5,0.9x,2.75 1-0.82= 2x，0.4x=48 9.6?0.3= 6,2x，6x=18 2.6×0.01= 35x，13x=9.6 0×25.4= 0.52×5,4x=0.6 4.8×0.4= 0.7(x，0.9)=42 7.2，2.8= 1.3x，2.4×3=12.4 12×2.5, (写出检验过程) 2.63，0.37, 20.5,4x=8.1 0.7×16,16×0.2= 3.6x?1.2=9.75 0.96?0.3, 18×1.5,1.7x=13.4 1.5,4.5= 18.5x,9.9x=1.721 2.5×0.4 9.2x+1.5x=32.1 1.4×2.5×4, 7.2×5,8x=11.2 8,2.5, 4x，3×0.7,6.5 6?1.2= (口算) 9.2?2.3= 0.6×1.2= 24?4，56?4, 0.84?0.6= 0.36，0.64, 4.5×0.1= 4?0.25= 15×0.4= 1.8×5= 30×(200，3), 10,7.64= 8.4?4.2= 1.86×7= 8×1.5, 13.88,6.29= 4.8?0.3= 926×0.15= 8?500= 2.73，1.5×4, 26.3，7.93= 计算下面各题(能简算的要简算) 23×7.06= 7.05×23.7+7.05×76.3 100.2,2.28= 0.125×3.2×2.5 12.81,(1.5+7.81) 44?9(精确到百分位) 8.7×2.6+6.4×8.7+8.7 三、计算(能简便的用简便方法1025,1125?4.5×3.6 计算) 12.25,3.1，0.85,6.17 8×25×1(25×16 1.9,1.9×0.9)?(3.8,2.8) (4(04×250 2.65×1.7，1.35×1.7 45(55,(6(82，15(55) 列竖式计算，得数保留一位小数。 3(2×99，3(2 1.2×1.4, 4.8×39，61×4(8 0.37×8.4, 34(52,17(87,12(23 3.14×2.8, 2(5×56+4(5×65 0.85×1.12, 489×101,489 0.86×5.4, 4(57+3(17+3(43+5(83 0.15×2.34, 4(6×56，48×4(6,4(6×4 2.84×0.03, 竖式计算: 0.38×0.13, 18?24= 43.68?26= 26.37?31, 25.3?0.88= 32?42, 0.1575?3.15= 2.84×0.03, 0.612?1.8= 4.8?23, 16.787?0.28 0.382×0.13, (保留一位小数) 4.2?4.5, 1、 列竖式计算 算下面各题 1.64，2.35= 2.36×0.22 8.65,6.31= 2.8×4.58 28.448?14= 3.57?4.2 0.58×250= 82.8?36 12.5，3.6= 45×2.46 10.88?34= 3.6?0.24 382.5?45 6.4×5.48 2、 简便计算 3.6×2.5+7.5×3.6 2.5×1.2 0.125×32 4.3×0.9 6.5×102 3.25×99+3.25