2022年一年级下册数学知识点归纳 .pdf

《2022年一年级下册数学知识点归纳 .pdf》由会员分享，可在线阅读，更多相关《2022年一年级下册数学知识点归纳 .pdf（11页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、一年级数学下册知识点汇总一、位置1.所在或所占的地方，有上下、前后、左右之分。2.上：位置方位名词。例如：汽车在马路的上面。3.下：位置方位名词。例如：船在桥的下面。4.前：位置方位名词。例如：张三在李四的前排，那么可以说张三在李四的前面。5.后：位置方位名词。例如：李四在张三的后排，那么可以说李四在张三的后面。二20 以内的退位减法1、方法：相加算减分解法过程：如：12-9=3 12 -9=3 把 12 分成 10 和 2 过程：想 9+3=12 2 10 先算 10-9=1 则 12-9=3 1 再算 1+2=3 2、应用题：已知条件里知道了其中一部分和另一部分，求总数，用加法计算。问题里

2、常见的关键字：一共、共、总的、原有等。已知条件里知道了总数和其中一部分，求另一部分，用减法计算。问题里常见的关键字：还剩、还有、应找回等。三、图形的拼组1、平面图形的拼组区分正方形和长方形长方形的特点：相对的两条长边相等，相对的两条短边相等。正方形的特点：四条边长度都相等。（2）常见拼组：两个完全相同的长方形可拼成正方形和长方形。两个完全相同的正方形可以拼成长方形。四个完全相同的小正方形，可拼成正方形和长方形。（3）数一数文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE

3、7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H

4、1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE

5、7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H

6、1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE

7、7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H

8、1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5文档编码:CE

9、7M6K3I8I2 HX8R1I3Z7H1 ZY4U3V5C5Y5（4）个长方形（10）个正方形2、立体图形的拼组（1）区分正方体和长方体长方体：有 6 个面，相对的面相同。正方体：有 6 个面，每个面都相同，都是正方形。（2）常见拼组 两个完全一样的长方体，可以拼成长方体。八个完全一样的正方体可以拼成一个大的正方体。当有好多个正方体重叠在一起的时候，不要忘数最底层或者最后面被遮掉的小正方体。四、100 以内数的认识1、10 个十是 100，读作一百。100 是由 10 个十或 100 个一组成，它是一个三位数。2、数数时，可以一个一个的数，也可以二个二个的数，五个五个的数，十个十个的数。3、

10、从右边起，第一位是个位，第二位是十位，第三位是百位。百十个（右边）第三位第二位第一位文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:C

11、B10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y

12、8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4

13、HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10

14、G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3

15、 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6

16、S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z54、读数和写数，都从高位起。当计数器上个位或十位一颗珠子都没有时，就写 0 占位。5

17、、用计数器表示一个数时，计数器各数位上的珠子数和这个数的个位，十位，百位上的数字相对应。6、只有个位的数是一位数，如 5、7、2；最大的一位数是9。有个位、十位的数是两位数，如 32、20；最小的两位数是10，最大的两位数是99。有个位、十位、百位的数是三位数，如 100。100 是最小的三位数。7、一个数，个位上是几，表示有几个一；十位上是几，表示有几个十。反之，这个数有几个一，个位上就是几；有几个十，十位上就是几。8、数的顺序百数图文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4

18、U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档

19、编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB1

20、0W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P

21、3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB

22、8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5

23、X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 Z

24、Q4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5举例：以 33 34 35为例：和 34 相邻的两个数是33 和 35；33 和 35中间的数是 34。比 34 少 1 的数是 33，比 34 多 1 的数是 35。34前面的数是 33，后面的数是 35；35比 34 多 1，33 比 34 少 1。以 52 为例：52和 60 之间的数是：53、54、55、56、57、5

25、8、59；（即大于52 小于 60 的 所有数）52前面的五个数是：51、50、49、48、47；后面的五个数是：53、54、55、56、57。52前面的第五个数是：47；后面的第五个数是：57。9、两位数比较大小，先看十位，十位上大的数就大，当十位相同时，就比个位，个位大的数就大。10、多得多、少得多、多一些、少一些的用法。两个数相差很大时就用多得多，少得多。相差很小时就用多一些，少一些。例如：37 6 34 相比较：37和 6相差很大，就说 37比6多得多或 6比 37少得多。文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3

26、D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8

27、X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X

28、2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ

29、4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U

30、6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编

31、码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10

32、W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z537 和 34相差很小，就说 37 比 34 多一些或 34 比 37 少一些。11、整十数加一位数及相应的减法如：30+2=32（想：3 个十和 2 个一组成的数是 32。）322=30（想：32 里去掉 2 个一，剩下 3 个十）口算方法：个位相加，十位不变；个位相减，十位不变

33、。五、认识人民币1、1 元=10角（1 元钱可以换 10个 1 角）1 角=10分（1 角可以换 10 个 1 分）1 元=100 分（1 元钱可以换 10 个 10 分，即 100 分）2 角5 角1 元5 元10元20 元文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 H

34、B8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G

35、5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3

36、ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S

37、4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文

38、档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB

39、10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8

40、P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z550元100 元2、简单的计算：单位相同，才能相加减。也就是元和元，角和角，分和分单位都相同的才能计算。3、小数表示法。小数点左边是几表示几元，小数点右边第一位是几表示几角，第二位是几表示几分。写作几元几角几分时，是0 的可以不写出。六、100以内的加法和减法（一）1、100 以内的加减法的口算，相同数位相加减，从个位算起，个位加减个位，十位加减十位。要算得即对又快，必须分清不进位，进位，不退位，退位。进位加法可用接数法计算。2、用竖式计算进位加法时：数位对齐，即个位对齐个位，十位对齐十位。从个位算起，个位满 10 向十位进 1。十位要

41、加上个位进上来的1。如：24+8=32 如 36-8=29 文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4

42、HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10

43、G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3

44、 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6

45、S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5

46、文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:C

47、B10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z53、用竖式计算退位减法时：数位对齐，即个位对齐个位，十位对齐十位。从个位算起，个位不够减，向十位退1，个位作

48、 10，个位计算完成后，十位要减去1。4、各类分解法（1）两位数加、减一位数。文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10

49、W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3

50、D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8X10G5X2U3 ZQ4O6S4U6Z5文档编码:CB10W2Y8P3D4 HB8