《练习九》教学课件.ppt

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,*,*,苏教版小学数学五年级上册,练 习 九,练习九,1,先用竖式计算，再用计算器验算。,4.7,5.63,4,7,.,5,6,.,3,3,3,0,1,.,10.33,9,0.37,4,0,3,.,7,3,6,3,.,3.63,练习九,1,先用竖式计算，再用计算器验算。,5.38,0.18,5,3,.,0,1,.,8,2,5,.,5.2,7.35,2.8,10.15,8,7,3,.,2,8,.,5,5,1,0,1,.,练习九,1,先用竖式计算，再用计算器验算。,3.54,4.46,3,5,.,4,4,.,6,8,8,6.02,5.94,0.08,4,6,0,.,5,9,.,4,2,8,0,0,.,练习九,2,用计算器算出小明家九月上旬每次收支后的余额和合计数。,1071.00,945.20,931.95,6989.05,6906.05,6942.05,6937.45,6900.05,6532.05,6094.00,765.45,练习九,3,用计算器计算前三题，再直接写出最后一题的得数。,1.89,2.889,3.8889,3.8888888889,练习九,4,妈妈用,50,元买一盒巧克力和一盒饼干，应找回多少元？,50,25.50,15.45,9.05,（元）,答：应找回,9.05,元。,练习九,5,直接写出得数。,2.5,3.2,5.7,0.43,0.3,0.13,0.25,0.75,1,9.8,4.8,5,1.7,0.4,2.1,1,0.6,0.4,练习九,6,7.8,3.02,10.82,8.52,8.07,0.45,3.2,0.48,10.3,13.98,3.86,0.34,4.2,7,5.08,1.92,13,5.4,2.6,10.2,练习九,7,一根,3.5,米长的竹竿竖直插入水池中，竹竿入泥的部分是,0.4,米，漏出水面的部分是,0.8,米。池水深多少米？,3.5,0.4,0.8,2.3,（米）,答：池水深,2.3,米。,练习九,8,下面面是沙青河水文站某一周的水位变化情况记录。你能根据记录把下表填写完整吗？,14.5,14.86,15.73,17,16.72,16.1,练习九,9,估计购买下面的商品各一件一共需要多少元，再用计算器计算。,32.80,43.90,17.28,93.98,（元）,答：各买一件一共需要,93.98,元。,