苏教版小学五年级数学上册上学期秋季ppt课件-第5单元-小数的乘法和除法-第10课时-练习十二

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,第,10,课 时 练习十二,小数乘法和除法,五,第 10 课 时 练习十二 小数乘法和除法五,1,9.80.3,41.42.5,9,.,8,.,0,3,4,.,1,4,.,2,5,4,9,2,.,2.94,0,7,0,2,8,2,8,0,5,3,0,1,.,103.5,巩固练习,19.80.341.42.59.8.034.14.,1,0.52.96,0.0367.5,9,2,.,6,0,5,.,1.48,0,8,4,1,.,2.025,5,2,0,2,.,6,.,7,5,0,3,0,.,巩固练习,10.52.960.0367.592.605.1.,2,下面的计算对吗？把不对的改正。,积的小数点,巩固练习,积的小数点,先点小数点；,再去掉,0,2下面的计算对吗？把不对的改正。积的小数点巩固练习积的小数,3,一种西服面料，每米售价,58.5,元。买,5.2,米这种面料，应付多少元？（先估计得数，再计算）,58.55.2,5,.,8,5,.,5,2,0,7,1,1,5,2,9,0,2,4,0,3,.,304.2,（元）,2,答：应付,304.2,元。,巩固练习,3一种西服面料，每米售价58.5元。买5.2米这种面料，应,4,根据第一栏的积，写出其他各栏的积。,7.2,0.72,7.2,7.2,0.072,巩固练习,4根据第一栏的积，写出其他各栏的积。7.20.727.27,5,0.670.13,1,0,2,7,6,1,7,8,.,0.0871,0,6,7,1,3,0,.,.,0,0,0.090.84,6,5,7,.,0.0756,0,8,4,0,9,0,.,.,0,0,巩固练习,50.670.1310276178.0.087106,5,1.020.76,0.7752,0.322.05,0.656,2,1,6,4,1,2,5,7,.,1,0,2,7,6,0,.,.,7,0,7,0,1,4,5,1,0,6,5,.,2,0,5,3,2,0,.,.,6,0,6,巩固练习,51.020.760.77520.322.050.,5,0.04514,0.63,0.190.25,0.0475,0,8,1,5,4,0,3,6,.,0,4,5,1,4,0,.,0,5,9,8,3,5,7,4,.,0,1,9,2,5,0,.,.,0,0,巩固练习,50.045140.630.190.250.047,6,一块长方形铝板，长,0.85,米，宽,0.6,米；一块正方形铝板，边长,0.72,米。哪一块铝板的面积大？大多少平方米？,0.850.6,0.51,（平方米）,0.720.72,0.5184,（平方米）,0.5184,0.51,0.0084,（平方米）,答：正方形铝板的面积大；大,0.0084,平方米。,巩固练习,6一块长方形铝板，长0.85米，宽0.6米；一块正方形铝板,7,一台拖拉机每小时耕地,0.5,公顷，,1.5,小时可耕地多少公顷？,0.75,小时可耕地多少公顷？,0.50.15,0.75,（公顷）,0.50.75,0.375,（公顷）,答：,1.5,小时可耕地,0.75,公顷，,0.75,小时可耕地,0.375,公顷。,巩固练习,7一台拖拉机每小时耕地0.5公顷，1.5小时可耕地多少公顷,8,写出表中各数的近似数。,1,0.8,0.81,0.805,2,2.0,1.97,1.974,巩固练习,8写出表中各数的近似数。10.80.810.80522.0,9,计算下面各题，得数保留一位小数。,5.23.4,5,.,2,.,3,4,8,0,2,17.7,6,5,1,8,6,7,1,.,1.326.8,9.0,6,5,0,2,9,6,7,9,.,1,3,2,6,8,.,.,8,7,1,巩固练习,9计算下面各题，得数保留一位小数。5.23.45.2.,9,计算下面各题，得数保留一位小数。,2.93.14,9.1,6,2,8,8,2,6,0,1,.,3,1,4,2,9,.,.,9,6,2,巩固练习,9计算下面各题，得数保留一位小数。2.93.149.1,10,计算下面各题，得数保留两位小数。,0.732.02,1.47,8.40.69,5.80,5.90.76,4.48,巩固练习,10计算下面各题，得数保留两位小数。0.732.021,11,小新出生时，身高,0.5,米，体重,3.4,千克。现在小新的身高是出生时的,2.8,倍，体重是出生时的,9.5,倍。他现在的身高和体重各是多少？,0.52.8,1.4,（米）,3.49.5,32.3,（千克）,答：,现在的身高是,1.4,米，体重是,32.3,千克。,巩固练习,11小新出生时，身高0.5米，体重3.4千克。现在小新的身,12,直接写出得数。,0.70.7,0.49,1.110,11,0.240.2,0.048,3.50.1,0.35,0.20.4,0.08,0.65,3,巩固练习,12直接写出得数。0.70.70.491.1101,13,计算下面各题，并用计算器验算。,0.861.7,1.462,2,0,6,6,8,2,6,4,.,0,8,6,1,7,.,.,1,3.50.67,2.345,5,4,2,0,1,5,4,3,.,0,3,5,6,7,.,.,2,2,巩固练习,13计算下面各题，并用计算器验算。0.861.71.4,13,计算下面各题，并用计算器验算。,0.650.48,0.312,1.040.025,0.026,0,2,0,6,0,2,1,.,0,6,5,4,8,0,.,.,3,0,5,2,1,0,4,0,2,0,.,.,5,0,2,5,8,0,2,0,0,6,.,2,0,0,巩固练习,13计算下面各题，并用计算器验算。0.650.480.,14,4.91.01,4.949,4.91,4.9,4.90.99,4.851,5.81.2,6.96,5.81,5.8,5.80.8,4.64,3.151.4,4.41,3.151,3.15,3.150.6,1.89,巩固练习,144.91.014.9494.914.94.9,15,不计算，直接在里填“”或“”。,1.4,1.040.8,1.6,1.61.3,0.63,0.630.8,0.85,0.851.3,巩固练习,15不计算，直接在里填“”或“”。1.41.040,16,一块平行四边形塑料板，底,3.2,分米，高,1.84,分米。它的面积大约是多少平方分米？（先估算，再计算，得数保留一位小数）,3.21.84,5.888,（平方分米）,5.9,（平方分米）,答：它的面积大约是,5.9,平方分米。,巩固练习,16一块平行四边形塑料板，底3.2分米，高1.84分米。它,17,我国渤海的面积是,7.7,万平方千米，黄海、东海、南海的面积分别是渤海的,4.94,倍、,10,倍和,45.5,倍。黄海、东海和南海的面积大约各是多少万平方千米？（得数保留整数）,7.74.94,38,（万平方千米）,答：黄海的面积大约是,38,万平方千米。东海的面积,7.710,77,（万平方千米）,7.745.5,350,（万平方千米）,巩固练习,17我国渤海的面积是7.7万平方千米，黄海、东海、南海的面,18,购买下面的水果各要多少元？（得数保留两位小数）,2.65.98,15.55,（元）,答：需要,15.55,元。,巩固练习,18购买下面的水果各要多少元？（得数保留两位小数）2.6,18,购买下面的水果各要多少元？（得数保留两位小数）,1.56.25,9.38,（元）,答：需要,9.38,元。,巩固练习,18购买下面的水果各要多少元？（得数保留两位小数）1.5,苏教版小学五年级数学上册上学期秋季ppt课件-第5单元-小数的乘法和除法-第10课时-练习十二,