<h3>一、計算我能行！</h3><h3>1.列豎式計算</h3><h3> 10.56×0.38= 42÷11=</h3><h3> 2.簡便運算</h3><h3> 3.56×99= 1.25×32×0.25=</h3><h3> 0.48÷6÷8= 0.56×90+5.6=</h3><h3>3.解方程（檢驗第2個）</h3><h3> 3x—1.5=7.8 15.6÷x=2</h3><h3><br></h3> <h1 style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">今天給大家講一講</span><span style="font-size: 14px;">小學數(shù)學中的</span></h1><h1 style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;"><span style="font-size: 14px;"></span><strong style="color: rgb(171, 5, 5); font-size: 15px; max-width: 100%; overflow-wrap: break-word !important;">數(shù)形結合思想</strong></h1></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"> 我國<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">著名數(shù)學家華羅庚</strong></span>對“數(shù)”與“形”之間的密切聯(lián)系有過一段精彩的描述。“數(shù)與形本是相依，焉能分作兩邊飛，數(shù)缺形少直覺，形少數(shù)難入微，數(shù)形結合百般好，隔裂分家萬事休，切莫忘，幾何代數(shù)統(tǒng)一體，永遠聯(lián)系切莫分離。” 寥寥數(shù)語，把“數(shù)形結合”之妙說得淋漓盡致。</h3></section> <p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; white-space: normal; color: rgb(51, 51, 51); max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"> 數(shù)形結合思想的實質即<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">通過數(shù)形之間的相互轉化，把抽象的數(shù)量關系，通過理想化抽象的方法，轉化為適當?shù)膸缀螆D形</strong></span>，從圖形的結構直觀地發(fā)現(xiàn)數(shù)量之間存在的內(nèi)在聯(lián)系，解決數(shù)量關系的數(shù)學問題。</h3><h1 style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; white-space: normal; max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><font color="#167efb"> </font><font color="#010101">———</font><b style=""><font color="#ff8a00">數(shù)形結合思想的例子</font><font color="#010101">———</font></b></h1><h1 style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; white-space: normal; max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><font color="#167efb"><b></b></font> 我們小學階段最常使用到數(shù)形結合思想的板塊主要有<span style="font-size: 17px; max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">和差、和倍、差倍問題、年齡問題、還原問題、行程問題等</span></strong></span><span style="color: rgb(51, 51, 51); font-size: 17px;">，所以掌握了數(shù)形結合這個技能之后，這些板塊基本就不在話下。</span></h1><div style=""><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; white-space: normal; max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">下面舉例說明：</strong></h3></div></section> <h3><font color="#ff8a00">例一：差倍問題</font></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【問題】</strong></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; overflow-wrap: break-word !important;">兩塊同樣長的花布，第一塊賣出31米，第二塊賣出19米后，第二塊是第一塊的4倍，<strong style="max-width: 100%; overflow-wrap: break-word !important;">求每塊花布原有多少米？</strong></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;">【解析】</span></strong></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;">先畫示意圖如下</h3> <p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">由圖可以看出<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">三份對應的是</strong></span>：31-19＝12（米）</h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">所以<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">第一塊布剩下的是</strong></span>：12÷（4-1）=4（米）</h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">第一塊布原有：4+31=35（米）（兩塊布原有長度相等）。</h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><font color="#ff8a00">例二：年齡問題</font></h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【問題】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">叔叔和小強聊天，叔叔說：“當我跟你一樣大時，你才2歲；當你像我這樣大時，我已經(jīng)38歲了。”<strong style="max-width: 100%; overflow-wrap: break-word !important;">求叔叔的年齡。</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【解析】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">先畫示意圖如下：</h3></section></section> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">由圖可知2歲加上三個年齡差后就變成了38歲，所以</span><span style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">小強和叔叔的年齡差</strong></span><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">就是：（38-2）÷4=9（歲），叔叔的年齡：38-9=29（歲）</span><br></h3> <p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><font color="#ff8a00">例三：還原問題</font></strong></h3><p style="color: rgb(171, 5, 5); max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【問題】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">小麗用4元買了一本《童話大王》，又用剩下的錢的一半買了一本《兒童時代》，買鋼筆又用去第二次剩下的錢的一半多1元，最后還剩4元，<strong style="max-width: 100%; overflow-wrap: break-word !important;">問：小麗原有多少錢？</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【解析】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">先畫示意圖如下：</h3></section> <h3><font color="#010101"><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">第一次剩下的一半：（1+4）×2=10（元）</h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">原有：10×2+4=24（元）</h3></section></font></h3> <h3><font color="#ff8a00">例四：行程問題</font></h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【問題】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">甲、乙、丙三人，甲每分鐘走100米，乙每分鐘走80米，丙每分鐘走75米。甲從東村，乙、丙從西村同時出發(fā)相向而行，途中甲、乙相遇后3分鐘又與丙相遇。<strong style="max-width: 100%; overflow-wrap: break-word !important;">求東西兩村的距離。</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">【解析】</strong></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">先畫示意圖如下：</h3></section> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">甲、乙相遇后3分鐘，甲、丙相遇。</span><span style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">甲、丙在3分鐘內(nèi)共走路程是</strong></span><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">（100+75）×3=525 (米)。顯然，這就是甲、乙相遇時，</span><span style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">乙比丙多走的路程</strong></span><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">，</span><span style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">乙比丙每分鐘多走</strong></span><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">80-75=5 (米)。所以，甲、乙相遇時離出發(fā)的時間是525÷5=105 (分鐘)。兩村間的距離是：（100+80）×105=18900 (米)。</span><br></h3><h1><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;"><font color="#333333">——</font><font color="#ff8a00"><b>【數(shù)形結合思想的重要性】</b></font><font color="#333333">——</font></span></h1><h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;">數(shù)形結合是連接“數(shù)”與“形”的“橋”，它</span><span style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">不僅作為一種解題方法，還是一種重要的數(shù)學思想。</strong></span><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal;"><font color="#333333"><br></font></span></h3> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"> 在小學數(shù)學教學中，數(shù)形結合能不失時機地為學生提供恰當?shù)男蜗蟛牧希梢詫⒊橄蟮臄?shù)量關系具體化，把無形的解題思路形象化，<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">不僅有利于學生順利的、高效率的學好數(shù)學知識，更有利于學生學習興趣的培養(yǎng)、智力的開發(fā)、能力的增強，使教學收到事半功倍之效</strong></span>。</h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"> 最關鍵一點，能<span style="max-width: 100%; color: rgb(171, 5, 5); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">使抽象枯燥的數(shù)學知識，形象化、具體化</strong></span>，使得數(shù)學學習充滿樂趣。</h3><p style="max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><b style=""><font color="#ed2308">三、課后作業(yè)：</font></b></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="font-size: 20.94px; letter-spacing: 2.61px; font-family: 微軟雅黑; text-indent: 41.88px;">1.甲自行車每小時行15千米，乙自行車每小時行12千米。乙先行1.5小時，問幾</span><span style="font-family: 微軟雅黑; font-size: 20.94px; letter-spacing: 2.61px; text-indent: 41.88px;">小時后甲可追上乙？（用兩種方法解答）</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="font-family: 微軟雅黑; font-size: 20.94px; letter-spacing: 2.61px; text-indent: 41.88px;"><br></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="font-family: 微軟雅黑; font-size: 20.94px; letter-spacing: 2.61px; text-indent: 41.88px;">2.</span><span class="rtcscls2_r_2 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">一籃雞蛋，第一次拿走整籃雞蛋的</span><span class="rtcscls2_r_2 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">，第二次又拿走剩下的</span><span class="rtcscls2_r_2 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">，最后籃子里還有</span><span class="rtcscls2_r_4 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">4</span><span class="rtcscls2_r_2 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">個雞蛋。你知道原來這個籃子里有幾個雞蛋嗎</span><span class="rtcscls2_r_4 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">?</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span class="rtcscls2_r_4 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;"><br></span></h3><h1 style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span class="rtcscls2_r_4 fszl_show" style="outline-style: initial; outline-width: 0px; -webkit-tap-highlight-color: transparent; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 18px; line-height: inherit; font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; vertical-align: inherit;">3.</span><span style="font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; font-size: 18px;">兒子陪爸爸聊天，爸爸說：“當我像你這么大時，你才15歲呢!”兒子說：“當我像爸爸這么大的時候，爸爸就75歲啦!”那么兒子今年幾歲？</span></h1><h1 style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; font-size: 18px;"></span><span style="font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; font-size: 18px;"><br></span><span style="font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; font-size: 18px;">4.</span><b><span style="color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, Helvetica, sans-serif; font-size: 15px; text-indent: 55px;">一個長方形長增加1.5米,或寬增加1.2米,面積都增加6平方米,求原長方形的面積。</span><span style="color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, Helvetica, sans-serif; font-size: 15px; text-indent: 55px;"> </span><span style="color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, Helvetica, sans-serif; font-size: 15px; text-indent: 55px; white-space: normal;"> </span></b></h1><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="font-family: "PT Serif", "Droid Serif", "Times New Roman", arial, sans-serif; font-size: 18px;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 2.5px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, Helvetica, sans-serif; font-size: 15px; text-indent: 55px; white-space: normal;"></span></h3><p style="font-family: -apple-system, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", STHeiti, "Microsoft YaHei", "Microsoft JhengHei", "Source Han Sans SC", SimSun, sans-serif; font-size: 16.8px; border: 0px; line-height: 34.91px; letter-spacing: 2.61px; white-space: normal; margin-bottom: 10px !important; text-indent: 2em !important;"><span style="font-family: 微軟雅黑; font-size: 20.94px; border: 0px; vertical-align: baseline; word-break: break-word;"></span></h3> <h1 style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 16px; letter-spacing: 2.5px; white-space: normal; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">通過今天數(shù)形結合思想的再次學習<br></span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">大家有沒有都掌握呢？<br></span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">沒有的話一定要加強聯(lián)系啦！<br></span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">畢竟數(shù)形結合思想<br></span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">對于小學數(shù)學來說真的很重要</span></h1>
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