河北数学一上-德慧贤达全科辅导王

知识点

<p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 分与合：（两种记忆方法，可以选择一种） <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">   <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 如：10的分与合 <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; text-indent: 36.75pt; background-color: rgb(255, 251, 217);">  10 <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; text-indent: 36.75pt; background-color: rgb(255, 251, 217);"> <img alt="一年级数学分与合知识点" height="53" name="image_operate_76511352293018415" real_src="http://s10.sinaimg.cn/mw690/af030470gcde73f6ec1c9&690" src="http://s10.sinaimg.cn/mw690/af030470gcde73f6ec1c9&690" style="margin: 0px; padding: 0px; border: 0px; list-style: none; width: 27px; height: 15px;" title="一年级数学分与合知识点" width="92" /> <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  1    9 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  2    8   ---------- 方法1：每种方法第一数依次增加1，第二数依次减少1 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  3    7 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  4    6 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  5    5 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  6    4 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  7    3 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  8    2 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">  9    1 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">   <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">          <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; text-indent: 42pt; background-color: rgb(255, 251, 217);"> 10 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> <a href="http://photo.blog.sina.com.cn/showpic.html#blogid=af0304700101ax3j&url=http://s10.sinaimg.cn/orignal/af030470gcde73f6ec1c9" style="text-decoration: none; color: rgb(160, 18, 0);" target="_blank"><img alt="一年级数学分与合知识点" height="13" name="image_operate_36721352293052403" real_src="http://s10.sinaimg.cn/bmiddle/af030470gcde73f6ec1c9&690" src="http://s10.sinaimg.cn/bmiddle/af030470gcde73f6ec1c9&690" style="margin: 0px; padding: 0px; border: 0px; list-style: none; width: 45px; height: 24px;" title="一年级数学分与合知识点" width="42" /></a> 1     9   ---------- 方法2：一组一组记忆（记住0与2，第二种前后两数交换位置……） <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 9     1 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 2     8 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 8     2 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 3     7 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 7     3 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 4     6 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 6     4 <p style="margin: 0pt 0px 0pt 27pt; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);"> 5     5 <p style="margin: 0pt 0px; padding: 0px; border: 0px; list-style: none; word-wrap: normal; word-break: normal; line-height: 21px; color: rgb(50, 62, 50); font-family: simsun; font-size: 14px; background-color: rgb(255, 251, 217);">