人教版小学数学五年级上册口算心算天天练　全册

人教版五年级（上）口算心算天天练（每天20分钟）学校 姓名 小数乘整数（一）一、 直接写得数。5×2= 25×4 = 125×8 =0.5×2 = 0.25×4 = 1.25×8 = 36×10 = 24×40 = 75×20 =0.36×10 = 0.24×40 =7.5×20 =5×200 = 125×80 = 29×10 = 0.5×200 = 0.125×80 = 0.29×10 = 2.5×2= 0.5×10= 0.6×8= 2.1×2= 2.8×10= 0.04×20= 5.6+0.4= 4.7+2.3= 4.5×2= 6.92.5= 7.2×8= 0.620.32= 二、列竖式计算。2.74×8 = 1.36×5 =4.18×15 = 0.38×35 = 小数乘整数（二）一、 直接写得数。5.6×100= 0.125×8= 0.7×9=0.8×11= 7.2+12.8= 46.73.8=12.8+4= 0.2×13= 2.5×5=1.64+4.1= 8.65×10= 0.35×6=3.08×1= 4.95×1000= 69×0.1=0.4×5= 0.325×100= 2.5×8=0.125×4= 3.28×0= 7.2×1=0.25×40= 1.25×8= 5×0.24=4.50.05= 5×0.12= 24×0.5=4.8×5= 2.84.2= 4.5×2=二、列竖式计算。 7.45×2 20.5×6 0.64×15 5.5×24 小数乘小数（一）一、 直接写得数。5×7= 12×8= 25×4=0.5×7= 1.2×8= 2.5×4=0.5×0.7= 1.2×0.8= 2.5×0.4=4.5×0.02= 0.7×0.8= 0.04×20= 5.5×0.2= 7.2×0.8= 1.4×0.5= 0.02×0.5= 0.7×0.9= 3.08×0.01=0.8×1.1= 0.35×0.6= 7.42.8= 6.9×0.1= 0.4×0.5= 7×0.6=3.28×0.1= 7.2×0.1= 0.01×0.1=0.25×0.4= 1.25×0.8= 2.4×0.5= 二、列竖式计算。6.24×4.5 0.29×0.340.321×4.2 9. 65×0.48小数乘小数（二）一、 直接写得数。10.5×0.4= 7.32.7= 8×0.125= 0.610.39= 109.4= 5.2×0.4=0.8×0.11= 7.212.8= 2.3×100=4.13.7= 2.5×16= 165.07= 0.02×0.5= 7.20.8= 1.4×0.5= 17.532.5= 1.02×0.2= 5.02×0.3=1.2×6= 0.26×0.3= 8.4×0.02= 0.8×0.05= 0.8×0.13= 0.34×0.2=8.08+0.92= 0.5×2.2= 0.3×0.5=1.25×4= 3.270.63= 15.8×0= 二、列竖式计算。24×54.5 32.6×1.90.28×0.15 68×0.44小数乘小数（三）一、 直接写得数。0.8×0.5= 5.5×0.3= 0.6×0.11=5.55.5= 0.542.2= 3.50.05=2×0.02= 0.25×40= 1.2×0.3 = 1.5×0.6= 73.5×0.1= 0.610.39= 46.552.5= 0.45×0.2= 1.25×8=2.64-1.54= 2.1×2= 2.5×2=0.8×1.25= 0.4×25= 0.6×8= 2.5×101= 0.02×3.5= 3.3×0.3=5.6×1= 23.5×0.1= 1.5×0.6= 2.0×0.9= 1.5×0.4= 1.8×0.5=二、判断积是几位小数。0.25×0.09（ ） 2.003×1.5（ ）1.03×0.4 （ ） 1.024×4.28 （ ）3.28×0.005（ ） 2.5×1.4 （ ）0.68×9 （ ） 2.6×15 （ ）32.6×50 （ ） 0.39×0.7 （ ）三、比大小1.21×1.3 1.21 5.7×0.95.7 3.27×4.5 3.27×0.5 1×4.4 0×4.49.6×0.85 0.85×9.6 24×0.65 24积的近似数一、 直接写得数。60×0.5= 32200= 0.12×6= 1.75.8= 54.45= 0.2×0.4=9.8-6.8= 6.899.81= 1.7×0.4=2.83.5= 1.05×6= 16×0.5= 0.12×5= 15.52.5= 40×0.0.9= 0.52.5= 9×0.2= 0.9×0.3=0.1×6= 2.1×0.7= 0.6×0.15= 20×0.05= 1.2×0.3= 0.3×0.9= 6.2+3.8= 5.5×3= 9×0.05=0.33×2= 9.60.4= 0.8×0.8= 二、算一算（按要求保留积的小数位数）。保留一位小数: 6.3×2.8 1.29×12.5保留两位小数 : 0.98×2.45 7.36×0.54连乘、乘加、乘减一、 直接写得数3.41.4×2=               0.7+0.8×4   6×0.6+3.4= 4.8×0.5×2= 7×1.17.2=          0.05×4×5 0.62+0.32×2= 8.65×10-6.5= 2.8×24.4= 5.2×0.4×0.5= 2.190.91×2=        44×0.31.4×0.5+0.5= 35×0.60.6= 1009.4×10= （ 4.8+1.2）×1.5= 3.25×0.117×0  12.5×37×8 0.7×0.6×100= （0.680.42）×0.5=  二、脱式计算。6.41.6×2.5 10.693.5×2.612.4×0.6×1.30.8×18.512.6整数乘法运算定律推广到小数（一）一、 乘法交换律与结合律的运用。4.56×0.4×2.5 12.5×2.7×0.8 12.5×32×0.25 2.5×3212.5×56 25×0.36二、 乘法分配律的运用。1.08×91.08 12.5×8.8 99×0.35 3.7×1.82.7×1.895.7×0.286.3×0.280.28×2 整数乘法运算定律推广到小数（二）1.25×7.7×8 2.5×(104)6.1×5.43.9×5.4 13×10.14.2×63137×4.2 5.5×9.812.5×2.5×0.8×4 7.8×97.87.2×0.32.8×0.3 32×1.254.2×6.513.49×4.2 5×1.03×0.2 45×2150×2.1 0.45×99 整数乘法运算定律推广到小数（三） 0.25×8.5×4= 0.25×16.2×41.25×2.5×32 3.2×0.25×12.5 0.25×360. 25×0.73×412.5×0.96×0.8 4.36×12.5×8 (1.250.125)×8 4.8×10.13.72×3.56.28×3.5 3 .6×1027.09×10.80.8×7.09 0.39×199 整数乘法运算定律推广到小数（四）0.32×403 1.87×9.90.1872.3×16+2.3×83+2.3