小数乘除法简便练习题
精品文档 小数乘除法简便练习题小数乘除法简便练习题 班级___________姓名______________ 2.5×7.1×16.12×99 + 16.125.2×0.9 + 0.9.3×50×0.2 0.75×1990.86×15.7-0.86×14.0.25×3.2÷3.5 7.28×99+7.226×15.7+15.7×24 8.05×3.4+7.×3.32×25 4.8×100.1 .09×10.8-0.8×7.09 0.9÷× 1.9.5×99.8 1.2×÷4.832+4.9-0.12.5×0.4×2.5×84.× 1 .8-4.8×0.5×0.279×343+0.657×27.× 17.-.×.4 五上小数乘除法简便运算专项练习题 班级___________姓名______________ 2.5× .8×2995×1.25×0.320.125×72 0.25×39+0.256.8×0.75÷0.28×0.56 + 44×0.412.5×56 13.5×0.12.5×8.5.7×0.28+6.3×0.28-0.28×2 9.5×9.16×1.53-0.053×919÷4.2÷3.5 15÷3.4÷2.5÷06-3.6×0.7 ×0.8 40.÷ 0.81 × 0.184.4×0.8-3.4×0. ×.5 2 小数乘法简便计算练习题 2016 1 1 / 6 6 精品文档 班级姓名 小数乘法的简便计算的方法: 1、乘法交换律与结合律、分配率的运用。 2、表面上看来,左右两边没有相同的因数,不能使用 乘法分配律。我们可以通过变一变,分一分的方法找出相同 因数再运用乘法分配律进行计算 0.25×8.5×412.5×0.96×0. 0.25×0.73×4.36×12.5×8 0.25×16.2×41.25×2.5×323.2×0.25×12.0.25×36 ×8.8×10.1.6×10 0.39×199 0.32×4033.65×10.10.85×9.93.72×3.5 + 6.28×3.5 15.6×2.1-15.6×1.1.8×7.8+78×0.56.5×99+ 56.5 7.09×10.8-0.8×7.091.87×9.9+0.184.2×99+ 4.2 3.8×4.56+3.83×5.449.7×99+9.7.5×3.7- 7.5×3.7 3.14×0.68+31.4×0.0327.2×0.2+ 2.4×1.45.4×11-5.4 7.74×+1.5×2.2.9×2.7+3.9×7. 12.7×9.9+ 2016 2 2 / 6 6 精品文档 1.27 2.3×16+2.3×23+2.33.65×4.- 36.5×0.37101×0.87-0.91×87 46×57 +23×8 10.7×16.1-15.1×106×0.8+ 0.2×7.6 1.28×8.6 + 0.72×8.10.6×0.35 - 9.6×0.38.9×1.010.65×101 48×0.56+44×0.40.279×343+ 0.657×2790.264×519+264×0.481 9.16×1.53- 0.053×91.0.125×912.5×10.8×0.25 45×21-50×2.145×1.58+ 5.5×15.825×7.3×0.4 一、计算题 1、直接写出得数。 0.45×2.5= 0.8×1.25 =0.3×3.6 =0.3×0.3 =10×0.07 = 0.3×1.4=0.05×7=0.92×0.4=0.2×0.26= 0.14×4 = 0.02×0.1=1.2×0.3=0.2×0.4= .2+1.= 100- 35.22=.3×4 =.5×0.4 =.4×5=0.22×4=.25×0 = 0.9-0.52=.99×1=0×3.52=12.5×4÷10 = 10-1.8-7.2= 0.43+3.57=.5×4×12=0.9×0.8= 1.05×100=1÷0.5= 0.96÷3=1.47÷0.7=5.4÷6=0.16.5×10= 0.6×0.8 2016 3 3 / 6 6 精品文档 = 0.56×100=3×0.9= 3.78×100=2.5×0.4= 4÷0.8=3.6×0.4= 3.215×100=0.8×10=.08×100=1.1×0.= 12.5×8=0×0.04=0×0.= 1.1×9= 0.16× ﹦1.78 + 2.=.6÷0.=1.2×0.5-0.= 0.7÷0.01=2.5×0.=12 + - 2.033.9=1.25×8÷1.2=6.6÷0.6=.37×0+4.6=.9 = .2÷3.5 = 1.6+2.4×0.=.14 - 0.9 = 27 + 456 + 73= 0.3×0.3=7.2+ 2.8=0.9÷0.01=12÷0.3=.87÷0.7 = 13÷4 = 0.96÷0.3 = 1.5×0.4 = ÷0.25 =.5×0.7×0.8=8-2.5=16÷1.6=5.6×1.01= 8×=0.36+0.64=64.32÷16=.2÷0.1=72.8÷0.8 = .4÷4.2= 13.8 +9.9= .4×2.5=0.05×0.8= 2.56 - 0.37 =1.25×0.8×0.5 =12×2.5 =1.23×3 = 3.2÷1.6=3.5+3.5×3=19.6÷2=.8÷2.2= 0.75×4 =×4=0.5×0.8=8.4×0.2=1.6×0.2 = .2×0.3=2.8×0.3 = 0.9÷0.15=1.8×0.4=.5÷0.55= 0.08×100=2.2÷0.11= .46+4.54= 12.5×0.8=0.35×0.3=1.4×5=.8×4= 2016 4 4 / 6 6 精品文档 19.6÷4=22.5×4= 2、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15= 0.025×14= .06×36= 0.04×0.12=.15×22 16.9÷0.13 13.76×0.8= 6.4×0.5 3.84×2.6≈ .1.55÷3.95.2×0.64.48×076×3= 0.20.0168.4×1.5.25×5 90.75÷3.68×3.7× 35.4×4.0.042×0.540.76×0.32 0.25×0.0462.52×3.1.08×25 0.12×0.5×0.16=.8×0.25= 2.5÷0.7= 10.75÷12.5= 0.125×1.4≈ 10.1÷3.3=9.04=3.25× 3、脱式计算 2.5×7.1×16.12×99+16.125.2×0.9+0.9 7.28×99+7.28 26×15.7+15.7×24 3.94+34.3×0.2 2016 5 5 / 6 6 精品文档 8.9×1.1×4.7 8.05×3.4+7.6 4.3×50×0.64 - 2.64×0.×0.2.7×5.4×3. 1.2×÷4.8 6.58×4.5×0.93.6×9.85-5.4.8×0.5+1.584.8 - 4.8×0.5 32+4.9-0. ×86.5×99+56.5 4.8×100.17.09×10