预习单《七彩课堂》4上数学青岛版54制

3.整数从左到右4.42.5123.1115.446.744405.1.26-0.4-0.56=0.3(万件）2.(])(2)10100面积］都相等101003整数运算定律推广到小数3.性质4.位数意义1.略2.(1)11.3717,7224(2)6.356.28o.5.3702.31036.00079.0105.5003髻同样4.(1)3.3(2)1.381.750嘈256.0.068.512.037405.7.880.171.5194小数点位置移动引起小数大小变化八今天我当家一小数乘法l.不适用1小数乘整数1l2.(1)一左一－左(2)10右100右101001.略2.(1)略(2)11.211.210点1123.右左4.1010010003.相同4.整数乘法小数5.5.7X6=34.2(元）5.(1)10100100010006.43.20.36,(2)0.058o.25250,,12o.72小数乘小数5名数改写1.2675267.52.5124.4752.25.6XO.9是多少].80006530562210013.(1)256X9(2)两4.23.0410102.(1)1050010500-200(2)0.210.5-0,21003.乘除以5.整数乘整数儿位小数小数点6.1004.313700048015o.51558957.1.080.024o.130.09514.868.345.74.75.163.65九我锻炼我健康一一平均数5.>=1求平均数6求小数的近似数1.54厘米2.(1)总和(2)略3.总数个数].05~90~40~4104.总数个数5.94分6.二班2.45舍去3.99542复式统计表”3.百分2.04.四舍五人法后1.略2.略3.略5.47个十分高低6.(1)45.4(2)32.<3)25I4.4511113521““7改写和省略,,＋游三峡一小数除法1.9700006000040000500004000001小数除以整数70000220000500000L(1)0.01(或百分之一）(2)0.1(3)57(4)262.(1)1754000175175.4.(2)2879500287,2,9.84--;-3是多少3.被除数4.相同5.被除数287.95亿288亿6.第兰种便宜。7.7.210.511.192.43.大小单位等号改写近似数约等号4.576000032小数除以小数5.272.7亿273亿209.7亿210亿139.8亿1.10倍向右移一位100倍向右移两位10倍140亿向右移一位六趣味拼搭一观察物体2.6663.38.5-:-2.24.商不变的规律5.75O观察物体6.除数7.被除数O8.3.62017420].长方形或正方形2.前上侧（左或右）9.14.21.21.21.5153.前侧（左或右）上4.略3商的近似值5.7块7块5块8块6.前面1.略2.腊肉的总钱数腊肉的数量97--;-8七奇异的克隆牛一一小数加减法3.四舍五人12.1312.1124.一四舍五人1小数加减法5.一6.略7.8.237.71.2].62620.82.0.80相同数位4循环小数3.0.05相同数位最低04.相同数位最低1.略2.350-;-63.不变4.循环小数5.337.6-2.82=334.78(千克）5.有限小数无限小数略6.17.945.6840.2515.36327.93.49验算6.26.66···2.857142857142···0.4545······2小数加i].16.8815.7541.122.略I