<div><div style="text-align: center;"><span style="font-weight: bold;"><font color="#ff0000">2013北师大版一年级下册数学知识点归纳</font></span></div><br><span style=" z-index:1; left:0px; "></span><span style=" font-weight:bold; ">一、</span><span style=" font-weight:bold; ">100以内数的认识</span><span style=" font-weight:bold; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2013/0625/201362516553.jpg?m=0.4044110437389463"><br><br><span style=" font-weight:bold; "><1>..找规律填空。</span><span style=" font-weight:bold; "></span><br><br><span>1. (</span><span style=" font-weight:bold; "> </span><span style=" font-weight:bold; ">4</span><span style=" font-weight:bold; "> </span><span> )、(</span><span> </span><span style=" font-weight:bold; ">5</span><span>)、6、7、( </span><span>8</span><span> )、( </span><span>9</span><span> )、10、( </span><span>11</span><span> )。</span><br><br><span>2. 20、30、( </span><span>40</span><span> )、( </span><span>50</span><span> )、( </span><span>60 </span><span>)、( </span><span>70 </span><span>)、( </span><span>80</span><span> )、90、(</span><span style=" font-weight:bold; ">100</span><span> )。</span><br><br><span>3. 68、66、( </span><span style=" font-weight:bold; "> 64 )、( 62)、( 60)、(58 )、(56 )、( 54 )。</span><span style=" font-weight:bold; "></span><br><br><span>4. (</span><span style=" font-weight:bold; ">90</span><span> )、85、80、(</span><span style=" font-weight:bold; "> 75 )、( 70 )、( 65 )、( 60 )、( 55 )。</span><span style=" font-weight:bold; "></span><br><br><span>5. 23、( </span><span style=" font-weight:bold; ">21 )</span><span>、19、17、( </span><span style=" font-weight:bold; "> 15 )、( 13 )、( 11 )、( 9 </span><span>)。</span><br><br><span>6. 一个一个数,“三十八”后面第4个数是( </span><span style=" font-weight:bold; "> 四十二 </span><span>)。</span><br><br><span>7. 二个二个数,从“二十一”向后数第3个数是( </span><span style=" font-weight:bold; ">二十七 </span><span> )。</span><br><br><span>8. 五个五个数,从“六十”向前数第2个数是( </span><span style=" font-weight:bold; ">五十 </span><span>)。</span><br><br><span>9. 十个十个数,从“七十八”向前数第5个数是( </span><span style=" font-weight:bold; "> 二十八 </span><span>)。</span><br><br><span>10. 按照从1-100的顺序数数是,大于87小于93的数有( </span><span style=" font-weight:bold; ">88、89、90、91、92</span><span>)。</span><br><br><span>11. 22和24之间的数是(</span><span style=" font-weight:bold; ">23</span><span> );46前一个数是(</span><span style=" font-weight:bold; ">45</span><span> );89后一个数是( </span><span style=" font-weight:bold; ">90</span><span> );</span><br><br><span> 59相邻的两个数是( </span><span style=" font-weight:bold; ">58 )和( 60 </span><span>)。 </span><br><br><span style=" font-weight:bold; ">(二)、看图写数。</span><span style=" font-weight:bold; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2013/0625/201362516716.jpg?m=0.6804305515252054"><br><span style="font-weight: bold;"><3>基础练习</span><br><br><span>1.计数器,从右边开始数,第一位是( </span><span style=" font-weight:bold; ">个</span><span> )位,第二位是(</span><span style=" font-weight:bold; ">十</span><span> )位,第三位是( </span><span style=" font-weight:bold; ">百</span><span style=" font-weight:bold; "> </span><span> )位。100是(</span><span style=" font-weight:bold; ">三</span><span> )位数,99是( </span><span style=" font-weight:bold; ">二 </span><span> )位数,8是(</span><span style=" font-weight:bold; ">一 </span><span> )位数。</span><br><br><span>2.最大的三位数是(</span><span style=" font-weight:bold; ">999</span><span> ),最小的三位数是(</span><span style=" font-weight:bold; ">100 </span><span> );最大的两位数是( </span><span style=" font-weight:bold; ">99</span><span> ),最小的两位数是( </span><span style=" font-weight:bold; ">10</span><span> );最大的一位数是( </span><span style=" font-weight:bold; ">9 </span><span> );最小的一位数是( </span><span style=" font-weight:bold; ">1</span><span> )。</span><br><br><span>3.最大的两位数比最大的一位数多( </span><span style=" font-weight:bold; ">90</span><span> )。</span><span style=" font-weight:bold; ">99 </span><span style=" font-weight:bold; ">–</span><span style=" font-weight:bold; "> 9 = 90</span><br><br><span>4.10个一是(</span><span style=" font-weight:bold; "> 10</span><span> );10个十是( </span><span style=" font-weight:bold; "> 100 </span><span> );一个百是( </span><span style=" font-weight:bold; ">10 </span><span>)个十。</span><br><br><span>5. 78里面有(</span><span style=" font-weight:bold; ">8</span><span> )个一和( </span><span style=" font-weight:bold; ">7</span><span> )个十; (</span><span style=" font-weight:bold; "> 3</span><span> )个十和( </span><span style=" font-weight:bold; "> 6</span><span>)个一组成36.</span><br><br><span>6. 8个十和6个一是(</span><span style=" font-weight:bold; ">86</span><span> );个位是5,十位是9,这个数是( </span><span style=" font-weight:bold; ">95</span><span> )。</span><br><br><span>7. 56中,十位上的数字是( </span><span style=" font-weight:bold; ">5</span><span> ),表示(</span><span style=" font-weight:bold; "> 5</span><span> )个(</span><span style=" font-weight:bold; ">十</span><span> ),个位上的数字是(</span><span style=" font-weight:bold; "> 6</span><span> ),表示( </span><span style=" font-weight:bold; ">6</span><span style=" font-weight:bold; ">)</span><span>个( </span><span style=" font-weight:bold; ">一</span><span> )。</span><br><br><span>8.“22”中两个“2”意思相同吗?为什么?( </span><span style=" font-weight:bold; ">不相同,十位上的</span><span style=" font-weight:bold; ">“2”</span><span style=" font-weight:bold; ">表示</span><span style=" font-weight:bold; ">2</span><span style=" font-weight:bold; ">个十,个位上的</span><span style=" font-weight:bold; ">“2”</span><span style=" font-weight:bold; ">表示</span><span style=" font-weight:bold; ">2</span><span style=" font-weight:bold; ">个一</span><span style=" font-weight:bold; "> </span><span> )</span><br><br></div>{$setpage}<div><br><br><span style=" font-weight:bold; "><3>提高练习</span><span style=" font-weight:bold; "></span><br><br><span>1. </span><span>一个两位数,个位上的数和十位上的数一样大, 这个两位数可能是( </span><span style=" font-weight:bold; ">11、22、33、44、55、66、77、88、99)。</span><span style=" font-weight:bold; "></span><br><br><span>2. </span><span>一个两位数,个位上的数比十位上的数大3,这个两位数可能是( </span><span style=" font-weight:bold; ">14、25、36、47、58、69 </span><span>)。</span><br><br><span>3.</span><span> </span><span>一个两位数,个位上的数和十位上的数合起来是9,这个两位数可能是( </span><span style=" font-weight:bold; ">18、27、36、45、54、63、72、81、90 </span><span>)。</span><br><br><span>4.</span><span> </span><span>比69大1的数是( </span><span style=" font-weight:bold; ">70 </span><span>) </span><span style=" font-weight:bold; ">69+1=70</span><span>;</span><br><br><span>比69 少10的数是(</span><span style=" font-weight:bold; "> 59 </span><span> )</span><span style=" font-weight:bold; ">69-10=59 </span><span>;</span><br><br><span>比69多30的数是( </span><span style=" font-weight:bold; ">99 </span><span>)</span><span style=" font-weight:bold; ">69+30=99</span><span>;</span><br><br><span>比100小1的数是( </span><span style=" font-weight:bold; ">99</span><span> )。</span><span style=" font-weight:bold; ">100-1=99</span><span style=" font-weight:bold; "></span><br><br><span>5. 40比( </span><span style=" font-weight:bold; "> 39</span><span> )大1,</span><span style=" font-weight:bold; ">(39)+1=40</span><span style=" font-weight:bold; "></span><br><br><span> 比( </span><span style=" font-weight:bold; "> 50</span><span> )小10。</span><span style=" font-weight:bold; ">40+10=(50)</span><span style=" font-weight:bold; "></span><br><br><span>6. 64比28多( </span><span style=" font-weight:bold; ">36</span><span> ),</span><span style=" font-weight:bold; ">64-28=36</span><span style=" font-weight:bold; "></span><br><br><span>比64多28的数是( </span><span style=" font-weight:bold; ">92</span><span> );</span><span style=" font-weight:bold; ">64+28=92</span><span style=" font-weight:bold; "></span><br><br><span>26比45少( </span><span style=" font-weight:bold; ">19</span><span> ),</span><span style=" font-weight:bold; ">45-26=19</span><span style=" font-weight:bold; "></span><br><br><span>比72少26的数是( </span><span style=" font-weight:bold; "> 46 </span><span>);</span><span style=" font-weight:bold; ">72-26=46</span><span style=" font-weight:bold; "></span><br><br><span>7. 一个加数是89,另一个加数是最大的一位数,和是( </span><span style=" font-weight:bold; ">98 </span><span> )。</span><span style=" font-weight:bold; ">89+9=98</span><span style=" font-weight:bold; "></span><br><br><span>8. 一个加数是39,另一个加数是48,和是(</span><span style=" font-weight:bold; ">87 </span><span> )。</span><span style=" font-weight:bold; ">39+48=87</span><span style=" font-weight:bold; "></span><br><br><span>9. 一个加数是47,和是最大的两位数,另一个加数是( </span><span style=" font-weight:bold; ">52 </span><span> )。</span><span style=" font-weight:bold; ">99-47=52</span><span style=" font-weight:bold; "></span><br><br><span>10. 一个加数是87,和是最小的三位数,另一个加数是( </span><span style=" font-weight:bold; ">13 </span><span> )。</span><span style=" font-weight:bold; ">100-87=13</span><br><br><span>11. 被减数是72,减数是35,差是( </span><span style=" font-weight:bold; ">37</span><span> )。</span><span style=" font-weight:bold; ">72-35=37</span><span style=" font-weight:bold; "></span><br><br><span>12. 被减数是80,差是42,减数是(</span><span style=" font-weight:bold; "> 38 </span><span> )。</span><span style=" font-weight:bold; ">80-42=38</span><span style=" font-weight:bold; "></span><br><br><span>13. 减数是32,差是49,被减数是( </span><span style=" font-weight:bold; ">81 </span><span> )。</span><span style=" font-weight:bold; ">32+49=81</span><span style=" font-weight:bold; "></span><br><br><span>14.小松鼠吃了27个松果,还剩48个松果,原来有( </span><span style=" font-weight:bold; "> 75 </span><span> )个。</span><span style=" font-weight:bold; ">27+48=75</span><span style=" font-weight:bold; "></span><br><br><span>15.原来有98个苹果,卖了56个,还剩( </span><span style=" font-weight:bold; ">42</span><span> )个。</span><span style=" font-weight:bold; ">98-56=42</span><span style=" font-weight:bold; "></span><br><br><span>16.树上原来有23只小鸟,现在还剩9只,飞走了(</span><span style=" font-weight:bold; "> 14 </span><span> )只。</span><span style=" font-weight:bold; ">23-9=14</span><span style=" font-weight:bold; "></span><br><br><span style="font-weight: bold;"><4>灵活运用</span><br><br><span style=" z-index:1; left:0px; "></span><span style=" z-index:1; left:0px; "></span><span style=" z-index:1; left:0px; "></span>1.用 <img src="//www.szxuexiao.com/uploadimages/2013/0625/201362516917.jpg?m=0.8457954078912735"> 三张卡片中的两张组成两位数,最大的数是( 85 ),最小的数是( 25 ),最大的数和最小的数相差( 60 )。85-25=60<br><br><strong>2.想一想,填一填。(课本上的例题,请参考课本)</strong><br><br><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161020.jpg?m=0.5761451998259872"><br><br><strong>3.(提高练习1—3题参考答案)</strong><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2013/0625/201362516116.jpg?m=0.39838155545294285"><br><br><strong>5.熟记规律(要灵活运用)</strong><br><br>(1)加数 + 加数 = 和 ;加数 = 和 – 加数;<br><br>(2)被减数 – 减数 = 差; 减数 = 被减数 – 差 ; 被减数 = 差 + 减数 ;<br><br>(3)原来 – 吃了 = 还剩; 吃了 = 原来 – 还剩 ; 原来 = 吃了 + 还剩 ;<br><br><strong>二,复习“图形和几何”</strong><span style=" font-weight:bold; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161226.png?m=0.2159787160344422"><br><span style=" font-weight:bold; "></span><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161247.png?m=0.7777145013678819"><br><br><span style=" font-weight:bold; "></span></div>{$setpage}<div><br><br><span style=" font-weight:bold; "></span><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161316.png?m=0.006135307718068361"><br><br><span style=" font-weight:bold; "></span><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161338.png?m=0.7567081463057548"><br><br><span style=" font-weight:bold; "></span><img src="//www.szxuexiao.com/uploadimages/2013/0625/201362516141.png?m=0.3106120117008686"><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161436.png?m=0.6638079222757369"><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161521.png?m=0.7837257296778262"><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161548.png?m=0.964547332143411"><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161617.png?m=0.02339410991407931"><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2013/0625/2013625161644.png?m=0.313947600312531"><br></div><div><br></div>
一年级下