五下数学复习资料1

五下数学复习资料1 班级:五(5)班 姓名:钱杨洁 学号:45号 第二单元:因数与倍数 1、为了方便，在研究因数和倍数的时候，我们所说的数指的是整数(一般不包括0) 2、一个数的最小因数是1，最大的因数是本身。一个数的因数的个数是有限的。 、一个数的最小倍数是本身，没有最大的倍数。一个数的倍数的个数是无限的。 3 4、一个数的最大因数和最小倍数是相等的，都是它本身。 5、完全数:6的因数有1，2，3，6，这几个因数的关系是:1+2+3=6，像6这样的数叫完全数，也叫完美数。完全数较小的有6，28，496，8128…… 6、个位上是0，2，4，6，8的数都是2的倍数。 7、自然数中，是2的倍数的数叫做偶数(0也是偶数)，不是2的倍数的数叫做奇数。自然数中的数不是奇数就是偶数。 8、奇数+偶数=奇数 奇数+奇数=偶数 偶数+偶数=偶数 偶数?偶数,偶数 奇数?奇数,偶数 奇数?偶数,奇数 偶数个偶数相加是偶数，奇数个奇数相加是奇数。 偶数×偶数,偶数 奇数×奇数,奇数 奇数×偶数,偶数 相临两个自然数之和为奇数，相邻自然数之积为偶数。 如果乘式中有一个数为偶数，那么乘积一定是偶数。 9、个位上是0或5的数，是5的倍数。 10、一个数各位上的数的和是3的倍数，这个数就是3的倍数。 11、3， 5的倍数的特征:个位是0或者5的并且各个数位上的数字之和能被3整除的数。 12、2， 3的倍数的特征:个位是0、2、4、6、8并且各个数位上的数字之和能被3整除的数。 13、2， 3，5的倍数的特征:个位是0并且各个数位上的数字之和能被3整除的数。 14、一个数，如果只有1和它本身两个因数，这样的数叫做质数(或素数)。如2，3，5，7都是质数。 15、一个数，如果除了1和它本身还有别的因数，这样的数叫做合数。如4，6，8，9，10都是合数。 16、1既不是质数，也不是合数。自然数包括0，1，质数和合数。 17、100以内的质数:2、3、5、7、11、13、17、19、23、29、31、37、41、43、47、53、59、61、67、71、73、79、83、89、97 while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements increase at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application 18、质因数:如果一个质数是某个数的因数，那么这个质数就是这个数的质因数。 19、分解质因数:把一个合数用质因数相成的方式 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示出来叫做分解质因数。如:4=2×2 ，6=2×3，8=2×2×2。 第三单元:长方形和正方形 1、两个面相交的边叫做棱。三条棱相交的点叫做顶点。相交于一个顶点的三条棱 的长度分别叫做长方体的长、宽、高。 2、由6个长方形(特殊情况有两个相对的面是正方形)围成的立体图形叫做长方体。在一个长方体中，相对面完全相同，相对的棱长度相等。 3、由6个完全相同的正方形围成的立体图形叫做正方体(也叫做立方体)。正方体有12条棱，它们的长度都相等，所有的面都完全相同。 4、长方体和正方体都有6个面、12条棱和8个顶点，只是正方体的棱长都相等。正方体可以说是长、宽、高都相等的长方体，它是一种特殊的长方体。 、长方体或正方体6个面的总面积叫做它的表面积。 5 6、长方体公式: 棱长和,(长，宽，高)×4 底面积(占地面积),长×宽 侧面积(左面、右面),宽×高 前(后)面积,长×高 表面积,(长×宽，长×高，宽×高)×2 没盖的表面积,长×宽，(长×高，宽×高)×2 7、正方体公式: 棱长和,棱长×12 棱长,棱长和?12 表面积,棱长×棱长×6 (任意一个面积×6) 没盖的表面积,棱长×棱长×5 8、物体所占空间的大小叫做物体的体积。 9、容器所能容纳物体的体积通常叫做它们的容积。 10、长方体的体积(容积),长×宽×高,底面积×高 字母公式:v=abh v=sh 11、正方体的体积(容积),棱长×棱长×棱长,底面积×棱长 while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements increase at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application 五年级 下册 数学七年级下册拔高题下载二年级下册除法运算下载七年级下册数学试卷免费下载二年级下册语文生字表部编三年级下册语文教材分析 数学复习资料(一) 班级: 姓名 家长签名 字母公式:v=a• a •a =a v=sh 12、a 读作“a的立方”表示3个a相乘，(即a• a •a) 13、计量体积要用体积单位，常用的体积单位有立方厘米，立方分米和立方米，可以写成cm3，dm3 ，m3。 14、计量液体的体积，如水，油等，常用容积单位升和毫升，也可以写成L和ml。 15、高级单位化成低级单位乘进率;低级单位化成高级单位除以进率。 16、、体积和容积单位之间的进率: 1立方米,1000立方分米 1立方分米,1000立方厘米 1立方米,1000立方分米,1000000立方厘米 1立方分米,1升 1立方厘米,1毫升 1升,1000毫升 字母表示:1dm3=1000 cm3 1 m3 =1000 dm3 1L=1000ml 1L=1 dm3 1ml=1 cm3 17、长方体或正方体容器的计算方法，跟体积的计算方法相同。但要从容器里面量长、宽、高。 第四单元:分数的意义和性质 1、在进行测量、分物或计算时，往往不能正好得到整数的结果，这时常用分数来表示。 2、一些物体)一些物体等都可以看作一个整体，把这个整体平均分成若干份，这样的一份或几份都可以用分数来表示。这就是分数的意义。 3、一个整体可以用自然数1来表示，通常把它叫做单位“1”。 4、把单位“1”平均分为若干份，表示其中的一份的数叫分数单位。如:2/3的分数单位是1/3。 5、分数与除法的关系:分子相当于被除数，分母相当于除数，分数线相当于除号，分数值相当于商。 a?b,a/b (b?0) 6、分子比分母小的分数叫真分数。真分数小于1。 7、分子比分母大或分子和分母相等的分数叫做假分数。假分数大于1或等于1。 while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements in3 crease at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application 8、像 ， ，……这样的分数叫做带分数。带分数由整数和真分数两部分组成。 9、有时根据需要，要把假分数化成整数或带分数。转化方法:用分子除以分母，要是能够整除，那么整除后的商就是你所要化简的整数，要是不能整除，那么商就是带分数的整数部分，余数就是分数的分子，分母不变。 10、分数的基本性质:分数的分子和分母同时乘或者除以相同的数(0除外)，分数大小不变。根据分数的基本性质可以进行约分和通分。 11、几个数公有的因数，叫做这几个数的公因数，其中最大的公因数，叫做它们的最大的公因数。公因数的个数是有限的。 12、最大公因数是公因数的倍数。公因数是最大公因数的因数。 13、求最大公因数的方法: (1)列举法:就是把几个数的所有因数都写出来，通过对比、观察、找出最大公因数。 12的因数有:1、2、3、4、6、12。 18的因数有:1、2、3、6、9、18。 12和18的公因数有:1、2、3、6。 12和18的最大公因数是6 (2)分解质因数法:就是将几个数各自分解成质因数的形式，把公有的质因数相乘得到的就是最大公因数。 如:12=2×2×3 18=2×3×3 12和18的最大公因数是2×3=6。 (3)短除法: 如: 14、公因数公因数只有1的两个数，叫做互质数。相临的两个数一定互质。两个连续奇数一定互质。1和任何数互质。 15、如果两个数是互质数，它们的最大公因数是1。 16、如果两个数是倍数关系，它们的最大公因数，就是较小的那个数。 17、如果两个数既不是互质数，又不是倍数关系，我们就用列举法或分解质因数法，求出最大公因数。 两个数分别除以他们的最大公因数，所得商互质。 两个数的最大公约数与最小公倍数的乘积等于这两个数的乘积。 while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements increase at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application 五年级下册数学复习资料(一) 班级: 姓名 家长签名 18、分子和分母只有公因数1的分数叫做最简分数。 19、把一个分数化成和他相等，但分子和分母都比较小的分数，叫做约分。 20、约分的方法: (1)分子分母同时除以它们的公因数，一直除到是最简分数为止。 (2)分子分母同时除以它们的最大公因数。 21、几个数公有的倍数，叫做这几个数的公倍数，其中最小的公倍数，叫做它们的最小的公因数。公倍数的个数是无限的。 22、公倍数是最小公倍数的倍数，最小公倍数是公倍数的因数。 23、最小公倍数是最大公因数的倍数。最大公因数是最小公倍数的因数。 24、求最小公倍数的方法: (1)列举法: (2)分解质因数法: (3)短除法: 、如果两个数是互质数，它们的最小公倍数是它们的积。 25 26、如果两个数是倍数关系，它们的最小公倍数，就是较大的那个数。 27、如果两个数既不是互质数，又不是倍数关系，我们就用列举法或分解质因数法，求出最小公倍数。 28、把异分母分数分别化成和原来分数相等的同分母分数，叫做通分。 29、通分的方法: 通常把两个分数化成以分母的最小公倍数为公分母的分数。注意根据分数的基本性质，分母乘几，分子也乘几。 30、分数大小的比较: 分母相同，分子大的分数大;分子相同，分母大的反而小。 异分母的分数相比较，先通分然后再比较。 31、分数和小数的互化: 分数化小数:用分子除以分母，除不尽时，要根据需要按“四舍五入”法保留几位小数。 小数化分数:把小数先化成以10、100、1000……为分母的分数，如 0.7=7/10，如果不是最简分数必须化成最简分数。 32、一个最简分数，它的分母中只含有质因数2和5，就能化成有限小数;如果含有2和5while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements in5 crease at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application 以外的质因数，就不能化成有限小数。 第五单元:分数的加法和减法 1、同分母分数相加、减，分母不变，只把分子相加减。 、分母不同的分数，要先通分才能相加减。 2 3、计算的结果，能约分的要约成最简分数。 4、分数加减混合运算的顺序与整数加减混合运算的顺序相同。有括号的鲜酸括号里面的;没有括号的，按照从左到右的顺序依次计算。 5、整数加法的交换律、结合律对分数假发同样适用。 第六单元:统计 1、收集和积累数据经常使用的方法是画(正)，哪种数据增加1，就在哪种数据的名称后面画一笔。为了便于比较，还要把这些数据加以整理，制成统计表或统计图。 、统计表可以分为单式统计表和复式统计表。 2 3、统计图可以分为条形统计图，折线统计图，扇形统计图。 while the lawn is still in a great stage of life activities, compared with the previous two periods, lawn water requirements increase at this stage, if not timely irrigation, not only affect the growth of grass, also causes yellow. At this stage, according to 4-5 of irrigation. In short, grass types, water requirements are different, you mustAccording to the climate conditions and plant species to determine irrigation of the lawn. About a day, when irrigation is better depends on irrigation. In theory, the same period as long as the amount of irrigation water is less than the infiltration capacity of the soil, irrigation all the time in a day. Then depends on the irrigation way. If intermittent intermittent spray or spray irrigation (high degree of atomization), irrigation is best with the Sun. Not only can add moisture, but also significantly improve the microclimate and photosynthesis and transpiration and gas exchange, facilitated the coordination of water, air, fertilizer and soil thermal and vegetative organs of root and root expansion, and could lead the entire transit storage of the plant material, breathing, lawns and lush. If using water, irrigation, and so on, should be watching season, early spring, late autumn around the heel as well and the rest take twilight as much. (2) irrigation irrigation quantity should be based on the soil, growing, grass and other factors to determine. General lawn growing season drought period, takes about a week to pay 20-40mm; vigorously growing lawn in the heat and severe drought situations, need to pay 50-60mm per week or more. In General, regardless of the method, should be irrigated more than once, each time less water, maximum surface runoff that just occurred. 2, fertilizing to maintain lawn dark green leaves, grows, portions must be fertilized. Lawn plants for leaf growth and blossom-free requirements, so nitrogen is more important, response to nitrogen fertilizer is the most obvious. Should be basic application