五年级下册数学脱式计算练习

Question

五年级下册数学脱式计算练习

Answer 1

1、直接写出得数。0.45×2.5＝1.125 0.8×1.25＝1 0.3×3.6＝1.08 0.3×0.3＝0.09 10×0.07＝ 0.7 0.92×0.4＝ 0.368 0.2×0.26＝0.052 0.14×4＝ 0.56 0.02×0.1＝ 0.002 1.2×0.3＝ 0.362.5×0.4＝ 1 2.4×5＝ 12 0.22×4＝ 0.88 3.25×0＝00.9－0.52＝ 0.38 3.99×1＝3.99 0×3.52＝ 0 12.5×8＝1008÷10 = 0.8 10-1.8-7.2= 1 0.43+3.57= 4 2.5×4×12=1440.9×0.8= 0.72 7.5x-3x = 4.5x a+3a+7a== 11a 1.05×100= 105 1÷0.5= 2 0.96÷3= 0.32 0.56×100= 56 3.78×100= 378 4÷0.8 =53.215×100= 321.5 0.8×10= 8 4.08×100= 408 1.1×0.2 =0.220.6×0.8 = 0.48 3×0.9= 2.7 2.5×0.4= 1 0.16×5 ＝ 0.8 1.78＋2.2 = 3.98 1.2×0.5-0.4 = 0.2 0.7÷0.01 = 70 2.5×0.4 = 1 12－3.9= 8.1 1.25×8÷1.25 = 8 6.6÷0.66 = 10 5.37×0+4.63 =4.63 3.9＋2.03＝ 5.93 7.2＋2.8＝10 1.4×5= 7 2、用竖式计算 0.18×15= 0.025×14= 3.06×36=0.04×0.12＝ 3.84×2.6≈ 5.76×3＝ （保留一位小数）16.9÷0.13 1.55÷3.9 3.7×0.01613.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25×5 35.4×4.2 0.042×0.54 0.76×0.32 0.12×0.5×0.16＝ 4.8×0.25＝ 0.125×1.4≈（保留两位小数）2.5÷0.7= （保留三位小数） 10.1÷3.3= （商用循环小数）10.75÷12.5= （用乘法验算） 3.25×9.04= （用除法验算）3、脱式计算（能简算的要简算）2.5×7.1×4 16.12×99＋16.12 5.2×0.9＋0.97.28×99+7.28 4.3×50×0.2 64－2.64×0.526×15.7＋15.7×24 (2.275 ＋0.625)×0.28 3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.88.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46 8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.5832＋4.9－0.9 4.8－4.8×0.5 (1.25－0.125)×84.8×100.1 56.5×99＋56.5 7.09×10.8－0.8×7.094.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4 12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101 0.68 ÷（5.2 -3.5）× 1.25 40.5 ÷ 0.81 × 0.18 4.8 ×（15 ÷ 2.4） 2．13.×0.×82576.81+6.81×99 0.25×185×40 4.4×0.8－3.4×0.8(9.37+9．37+9．37+9．37)× 2．5 4．2.×1.＋1.×1.752.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.12.5×(3.8×0.04) 7.69×101 3.8×10.1 0.25×39+0.25 0.125×72 46×0.33+54×0.33(8×5.27) ×1.25 6.81+6.81×99 0.25×185×406.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.29.5×99 13.5×0.98 12.5×8.8 补充回答：脱式计算（能简算的要简算）7.28×99+7.28 4.3×50×0.2 64－2.64×0.526×15.7＋15.7×24 (2.275 ＋0.625)×0.28 3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8