2022年人教版小学数学三年级上册第六单元知识点和练习 .pdf

学习好资料欢迎下载三年级数学上册培优课 11.30 授课老师：老师学生姓名：培优内容：第六单元多位数乘一位数知识点：一、口算乘法掌握整十，整百乘一位数的口算乘法先把整十整百数 0 前面的数与一位数相乘，计算出积后，再看因数末尾有几个 0,就在积的末尾添上几个0。二、乘法估算掌握两、三位数乘一位数的估算方法把两、三位数看作与它接近的整十、整百数，再与一位数相乘三、笔算乘法（1）多位数乘一位数（不进位）的笔算乘法：把一位数写在多位数下面，与多位数个位对齐。从个位起，用一位数依次去乘多位数每一位上的数，哪一位上的数相乘，就在横线下对着那一位写积。（2）多位数乘一位数（要进位）的笔算乘法：相同的数位对齐，从个位乘起，用一位数分别乘多位数每一位上的数，哪一位上的乘积满几十就向前一位进几。（3）一个因数中间有0 的乘法：从个位起，用一位数依次乘另一个因数每一位上的数，在与中间的0 相乘时，如果没进上来的数，要在那一位上写 0 占位，如果有进上来的数必须加上。（4）一个因数末尾有0 的乘法：可先用一位数去乘0 前面的数，再看因数末尾有几个0,就在积的末尾添上几个0。学习好资料欢迎下载数学培优课堂练习题（注带*的为提升题）一、填空。1、60 是（）个十，6 个十乘 4 得（）个十，就是（）。2、12 560，12 和 5 都是乘法中的（）数，60 是乘法中的（）。3、6 个 418的和是多少？列式与得数是（）。4、计算 400 7 时，想法是：4 乘以 7 得 28,在末尾添（）个 0,就得到 400 7 的积了，是（）。5、要使“341”的积是三位数，内最大可以填（）；要使积是四位数，内最小可填（）。6、三位数乘以一位数，积可能是（）位数，也可能是（）位数。7、对折 3 次后的绳子长度是5 厘米，这根绳子长是（）厘米。8*、小苗看一本 105 页的连环画，第一天看10 页，第二天看的页数是第一天的 2 倍，第三天应从第（）页看起。二、判断。1、一个三位数乘 1，所得的积还是三位数。（）2、在乘法里，积一定比其中的一个因数大。（）3、已知 AB0，可以确定 A、B 两个数中至少有一个是0。（）4*、一个因数不变，另一个因数扩大到原来的3 倍，它们的积也扩大到原来的 3 倍。（）三、选择。1、不计算，比较大小，879 5（）879 8。文档编码:CO9P1Z5X3Y7 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12 四、计算1、估算。398 4 502 2 983 7 2、口算。260172830241310450701024700 49340 3、列竖式计算。235 7 640 5 207 5 四、解决问题。1、一辆自行车的价格是358 元，妈妈带 1000 元买 3 辆自行车够吗？2*、学校图书室买回科技书240 本，文艺书 320 本。买回的故事书是科技书和文艺书本数的和的3 倍，买回的故事书有多少本？文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 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