三年級(jí)數(shù)學(xué)上學(xué)期第八單元期末復(fù)習(xí)單元課件全套蘇教版

[蘇教版]三年級(jí)上冊(cè)數(shù)學(xué)優(yōu)質(zhì)課件SJ·小學(xué)數(shù)學(xué)第八單元期末復(fù)習(xí)本學(xué)期學(xué)習(xí)的內(nèi)容主要有哪些？回顧學(xué)習(xí)過程，你有什么體會(huì)？互相說一說。一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98我最感興趣的內(nèi)容我學(xué)得最好的內(nèi)容我覺得有困難的內(nèi)容將你的學(xué)習(xí)情況填寫在下面的表格中。一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98蘇教版三年級(jí)上冊(cè)八期末復(fù)習(xí)乘法和有關(guān)的實(shí)際問題兩、三位數(shù)乘一位數(shù)口算倍的認(rèn)識(shí)筆算乘數(shù)中間或末尾有0的乘法系統(tǒng)梳理估算【單擊文字跳轉(zhuǎn)鏈接】1兩、三位數(shù)乘一位數(shù)的口算整十、整百數(shù)乘一位數(shù)，先把整十、整百數(shù)看作一位數(shù)，按表內(nèi)乘法算出積，再看乘數(shù)末尾一共有幾個(gè)0，就在積的末尾添上幾個(gè)0。整理復(fù)習(xí)整十、整百數(shù)乘一位數(shù)的口算方法：【點(diǎn)擊返回】幾十幾乘一位數(shù)，將幾十幾分成幾十和幾，分別乘一位數(shù)，再把乘得的積相加。幾十幾乘一位數(shù)的口算方法：1兩、三位數(shù)乘一位數(shù)的口算【點(diǎn)擊返回】先把兩、三位數(shù)看作與它接近的整十?dāng)?shù)或整百數(shù)，再與一位數(shù)相乘，估算出近似值。兩、三位數(shù)乘一位數(shù)的估算方法：2兩、三位數(shù)乘一位數(shù)的估算【點(diǎn)擊返回】3倍的認(rèn)識(shí)倍是兩個(gè)數(shù)進(jìn)行比較的一種關(guān)系。求一個(gè)數(shù)是另一個(gè)數(shù)的幾倍，用除法計(jì)算，即倍數(shù)＝一個(gè)數(shù)÷另一個(gè)數(shù)；求一個(gè)數(shù)的幾倍是多少，用乘法計(jì)算。【點(diǎn)擊返回】365×41460221相同數(shù)位對(duì)齊，從個(gè)位乘起，用一位數(shù)依次去乘兩、三位數(shù)每一位上的數(shù)，與哪一位相乘，積就寫在哪一位的下面，哪一位上乘得的積滿幾十就向前一位進(jìn)幾。計(jì)算過程中，既要考慮后一位進(jìn)上來的數(shù)，也要考慮向前一位所進(jìn)的數(shù)。4兩、三位數(shù)乘一位數(shù)的筆算【點(diǎn)擊返回】5乘數(shù)中間或末尾有0的乘法相同數(shù)位對(duì)齊，用一位數(shù)分別去乘三位數(shù)每一位上的數(shù)。在與中間的0相乘時(shí)，如果有進(jìn)位數(shù)，要加上進(jìn)位數(shù)；如果沒有進(jìn)位數(shù)，要在這一位上寫0占位。乘數(shù)中間有0的乘法的筆算方法：【點(diǎn)擊返回】0和任何數(shù)相乘都等于05乘數(shù)中間或末尾有0的乘法先用一位數(shù)與多位數(shù)中0前面的數(shù)相乘，再看乘數(shù)末尾有幾個(gè)0，就在積的末尾添寫幾個(gè)0。乘數(shù)末尾有0的乘法的筆算方法：【點(diǎn)擊返回】1.口算下面各題，并說說是怎樣算的。60×5=3×21=15×6=600×5=3×24=5×16=300639030007280隨堂練習(xí)想：5×6=30201【選自教材第98頁第1題】2.4×21=9×50=43×2=6×12=40×6=4×15=500×8=14×3=16×2=18×4=2×35=700×9=844508672240604000423272706300【選自教材第98頁第2題】271×3201×3210×3=813=603=6303.271×38132201×3603210×3630【選自教材第98頁第3題】8×4678×4068×460=3736=3248=36803.467×83736553406×8324843460×8368043【選自教材第98頁第3題】當(dāng)乘數(shù)中間有0時(shí)，要注意積的十位；當(dāng)乘數(shù)末尾有0時(shí)，要注意列出簡(jiǎn)便的豎式。4.6×8498×3145×6320×7=504=294=870=2240【選自教材第99頁第4題】5.小紅、小麗和小華星期天上午去茶場(chǎng)采茶，每人采茶450克。她們一共采茶多少克？450×3=1350（克）答：她們一共采茶1350克?！具x自教材第99頁第5題】6.學(xué)校多功能教室有200個(gè)座位。要安排一個(gè)年級(jí)的同學(xué)在這里開聯(lián)歡會(huì)，估計(jì)一下，安排哪個(gè)年級(jí)比較合適？【選自教材第99頁第6題】一年級(jí)共有人數(shù)：40×6=240>200（人）二年級(jí)共有人數(shù)：40×5=200=200（人）三年級(jí)共有人數(shù)：50×5=250>200（人）答：安排二年級(jí)比較合適。404050估算時(shí)通常把兩、三位數(shù)看作整十、整百數(shù)，估算的結(jié)果可以是實(shí)際結(jié)果的上、下界，也可以是與實(shí)際結(jié)果較為接近的數(shù)值。7.剩下沒有澆水的樹的棵數(shù)：4×28–38=74（人）答：剩下74棵沒有澆?！具x自教材第99頁第7題】（1）足球的個(gè)數(shù)是排球的幾倍？（2）籃球的個(gè)數(shù)是排球的幾倍？（3）羽毛球的個(gè)數(shù)是籃球的3倍，羽毛球有多少個(gè)？8.【選自教材第100頁第12題】求一個(gè)數(shù)是另一個(gè)數(shù)的幾倍，用除法計(jì)算；求一個(gè)數(shù)的幾倍是多少，用乘法計(jì)算。（1）足球的個(gè)數(shù)是排球的幾倍？（2）籃球的個(gè)數(shù)是排球的幾倍？（3）羽毛球的個(gè)數(shù)是籃球的3倍，羽毛球有多少個(gè)？8.16×3=48（個(gè)）24÷8=316÷8=2483倍2倍【選自教材第100頁第12題】通過這節(jié)課的學(xué)習(xí)活動(dòng)，你有什么收獲？課堂小結(jié)一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98蘇教版三年級(jí)上冊(cè)除法和有關(guān)的實(shí)際問題兩、三位數(shù)除以一位數(shù)整十、整百數(shù)除以一位數(shù)的口算筆算兩、三位數(shù)除以一位數(shù)除法的驗(yàn)算首位或首兩位能整除首位不能整除或不夠除被除數(shù)有0或商里有0系統(tǒng)梳理【單擊文字跳轉(zhuǎn)鏈接】先按表內(nèi)除法算出商，再看被除數(shù)的末尾還剩幾個(gè)0，就在商的末尾添上幾個(gè)0。整理復(fù)習(xí)1整十、整百數(shù)除以一位數(shù)的口算【點(diǎn)擊返回】三位數(shù)除以一位數(shù)，從百位除起，百位數(shù)大于或等于除數(shù)，商就是三位數(shù)，百位數(shù)不夠除就看前兩位，除到哪一位，商就寫在那一位的上面，有余數(shù)的和下一位合起來繼續(xù)除，哪位（百位除外）不夠商1，就商0占位。2兩、三位數(shù)除以一位數(shù)的筆算【點(diǎn)擊返回】相同數(shù)位對(duì)齊。從被除數(shù)的最高位除起，一位一位地往下除，除到被除數(shù)的哪一位，商就寫在那一位的上面。兩、三位數(shù)除以一位數(shù)（首位或首兩位都能整除）的筆算：三位數(shù)除以一位數(shù)，從百位除起，百位數(shù)大于或等于除數(shù)，商就是三位數(shù)，百位數(shù)不夠除就看前兩位，除到哪一位，商就寫在那一位的上面，有余數(shù)的和下一位合起來繼續(xù)除，哪位（百位除外）不夠商1，就商0占位?！军c(diǎn)擊返回】（1）從被除數(shù)的高位除起，一位不夠看兩位；（2）每次余下的數(shù)要與被除數(shù)下一位上的數(shù)合起來繼續(xù)除，除到哪一位，商就寫在那一位的上面；（3）每次余下的數(shù)要比除數(shù)小。兩、三位數(shù)除以一位數(shù)（首位不能整除或不夠除）的筆算：2兩、三位數(shù)除以一位數(shù)的筆算三位數(shù)除以一位數(shù)，從百位除起，百位數(shù)大于或等于除數(shù)，商就是三位數(shù)，百位數(shù)不夠除就看前兩位，除到哪一位，商就寫在那一位的上面，有余數(shù)的和下一位合起來繼續(xù)除，哪位（百位除外）不夠商1，就商0占位。【點(diǎn)擊返回】三位數(shù)除以一位數(shù)，在求出商的最高位以后，遇到被除數(shù)的某一位上是“0除以一個(gè)數(shù)”或不夠商1時(shí)，就在這一位商0占位。商中間或末尾有0的除法的筆算：0除以任何不是0的數(shù)都等于02兩、三位數(shù)除以一位數(shù)的筆算3除法的驗(yàn)算

沒有余數(shù)的除法，根據(jù)“商×除數(shù)=被除數(shù)”驗(yàn)算；有余數(shù)的除法，根據(jù)“商×除數(shù)+余數(shù)=被除數(shù)”驗(yàn)算?！军c(diǎn)擊返回】1.口算下面各題，并說說是怎樣算的。2002080401812隨堂練習(xí)60÷3= 280÷7= 36÷3=600÷3= 400÷5= 36÷2=【選自教材第99頁第8題】整十、整百數(shù)、幾百幾十?dāng)?shù)除以一位數(shù)：先按表內(nèi)除法求出商，再在后面添寫相應(yīng)個(gè)數(shù)的0；幾十幾除以一位數(shù)：先將幾十幾分成幾十和幾或幾十和十幾，分別除以一位數(shù)，再把除得的結(jié)果合起來。2.800÷4=60÷5=93÷3=28÷2=44÷2=84÷7=720÷9=500÷5=56÷4=320÷8=72÷6=48÷3=20022141212403180121410016【選自教材第99頁第9題】66322666066÷364÷361÷33.=22=21……1=20……16432164316132061三位數(shù)除以一位數(shù)，從被除數(shù)的最高位起，一位一位地往下除，如果最高位不夠除，就用它的首兩位去除；除到哪一位，就把商寫在那一位的上面；求出商的最高位數(shù)后，如果哪一位上不夠商1，就在這一位商0；每次除得的余數(shù)都要比除數(shù)小?！具x自教材第99頁第10題】8484212844880848÷4548÷4148÷43.=212=137=37548413741412282801484371228280【選自教材第99頁第10題】642÷9642÷8642÷6=71……3=80……2=10764297163129364288064264261076424203.【選自教材第99頁第10題】4.計(jì)算下面各題，并驗(yàn)算。92÷3=923392030×390+292驗(yàn)算：30……2【選自教材第99頁第11題】412÷8=41285401128451×8408+4412驗(yàn)算：51……4249÷7=249732135935435×7245+4249驗(yàn)算：35……4807÷4=80742807431201×4804+3807驗(yàn)算：201……35.97÷4=24（串）······1（個(gè)）答：最多能串24串?！具x自教材第100頁第13題】6.植物小組培育了60盆花，放在禮堂24盆，剩下的平均放在3個(gè)會(huì)議室里。每個(gè)會(huì)議室里放多少盆？（60-24）÷3=12（盆）答：每個(gè)會(huì)議室放12盆?！具x自教材第100頁第14題】通過這節(jié)課的學(xué)習(xí)活動(dòng)，你有什么收獲？課堂小結(jié)一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98蘇教版三年級(jí)上冊(cè)長(zhǎng)方形和正方形平移、旋轉(zhuǎn)和軸對(duì)稱長(zhǎng)方形和正方形長(zhǎng)方形和正方形的特征（邊和角）周長(zhǎng)的含義平面圖形的周長(zhǎng)長(zhǎng)方形的周長(zhǎng)正方形的周長(zhǎng)系統(tǒng)梳理【單擊文字跳轉(zhuǎn)鏈接】平移、旋轉(zhuǎn)和軸對(duì)稱平移（朝某一個(gè)方向）旋轉(zhuǎn)(繞某一個(gè)點(diǎn))軸對(duì)稱圖形【單擊文字跳轉(zhuǎn)鏈接】整理復(fù)習(xí)1長(zhǎng)方形和正方形的特征【點(diǎn)擊返回】長(zhǎng)方形正方形相同點(diǎn)邊角不同點(diǎn)都有4條邊都有4個(gè)角，且都是直角對(duì)邊相等四條邊都相等物體某個(gè)面一周邊線的長(zhǎng)度，稱為這個(gè)面的周長(zhǎng)。2周長(zhǎng)的含義【點(diǎn)擊返回】3平面圖形的周長(zhǎng)長(zhǎng)方形正方形（長(zhǎng)+寬）×2邊長(zhǎng)×4周長(zhǎng)C=2abC=4a【點(diǎn)擊返回】4平移物體沿著直線方向運(yùn)動(dòng)。

物體的的形狀、大小和本身的方向都不改變，只是位置發(fā)生了變化。平移【點(diǎn)擊返回】5旋轉(zhuǎn)物體圍繞著一個(gè)點(diǎn)或一個(gè)軸轉(zhuǎn)動(dòng)。旋轉(zhuǎn)物體的的形狀、大小都不改變，只是本身的方向和位置發(fā)生了變化，這就是旋轉(zhuǎn)的特征?！军c(diǎn)擊返回】沿一條直線對(duì)折后折痕兩邊能夠完全重合的圖形。6軸對(duì)稱圖形【點(diǎn)擊返回】隨堂練習(xí)1.先量一量，再計(jì)算每個(gè)圖形的周長(zhǎng)。1cm2cm2cm2+1+1=5（cm）1cm2cm2cm3cm2+2+3+1=8（cm）1cm1×6=6（cm）【選自教材第100頁第15題】2.一塊長(zhǎng)方形菜地，長(zhǎng)20米，寬8米。如果要給這塊菜地圍上籬笆，籬笆的長(zhǎng)是多少米？（20+8）×2=56（米）答：籬笆的長(zhǎng)是56米?！具x自教材第100頁第16題】3.是平移的畫“√”，是旋轉(zhuǎn)的畫“○”?！獭獭稹稹具x自教材第100頁第17題】2.下面的消防安全標(biāo)識(shí)，哪些可以看作軸對(duì)稱圖形？√√√√【選自教材第100頁第18題】通過這節(jié)課的學(xué)習(xí)活動(dòng)，你有什么收獲？課堂小結(jié)一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98蘇教版三年級(jí)上冊(cè)千克和克分?jǐn)?shù)的初步認(rèn)識(shí)（一）整理復(fù)習(xí)1千克和克稱一般物品有多重，常用千克作單位。千克可以用字母“kg”表示。稱比較輕的物品，常用克作單位?？丝梢杂米帜浮癵”表示。1千克＝1000克（質(zhì)量單位）2分?jǐn)?shù)的初步認(rèn)識(shí)（一）讀作：四分之三分?jǐn)?shù)線分子分母其中的幾份平均分的份數(shù)平均分比較分?jǐn)?shù)大小的方法是：分子是1的分?jǐn)?shù)，分母越小，表示分的份數(shù)越少，其中的1份越大。

分子相同，分母小的分?jǐn)?shù)大。分成同樣多的份數(shù)，取的份數(shù)越多就越大。分母相同，分子大的分?jǐn)?shù)越大。分?jǐn)?shù)的簡(jiǎn)單計(jì)算：同分母分?jǐn)?shù)相加減，分母不變，只把分子相加減。

1可以看作是分子分母相同的分?jǐn)?shù)。1與分?jǐn)?shù)相減：1.在（）里填合適的單位。（1）一袋大米重25（）。（2）一袋水果大約重3（）。（3）一盒餅干重500（）。（4）一筐土豆重18（）。千克千克克千克隨堂練習(xí)【選自教材第101頁第19題】2.3千克=（）克9000克=（）千克8千克=（）克2000克=（）千克3000980002【選自教材第101頁第20題】3.2個(gè)橘子90克，一個(gè)橘子45克。50+20+20=90（g）90÷2=45（g）【選自教材第101頁第21題】4.用分?jǐn)?shù)表示涂色部分，并說說每個(gè)分?jǐn)?shù)的含義。

把圓平均分成4份，涂色部分占其中1份把三角形平均分成3份，涂色部分占其中2份把長(zhǎng)方形平均分成5份，涂色部分占其中2份【選自教材第101頁第22題】5.把一張長(zhǎng)方形紙對(duì)折、再對(duì)折……數(shù)一數(shù)每次對(duì)折后平均分成的份數(shù)，填在下表里，并說說每份各占這張紙的幾分之幾。

【選自教材第101頁第23題】48416532664對(duì)折次數(shù)每次增加1次，平均分成的份數(shù)就等于原來的2倍。6.一塊布的

做上衣，做褲子。你會(huì)用不同的顏色在下面的大長(zhǎng)方形中表示做上衣的布和做褲子的布嗎？

上衣褲子【選自教材第101頁第24題】（1）做上衣和褲子一共用了這塊布的幾分之幾？

（2）做上衣比做褲子多用了這塊布的幾分之幾？

上衣褲子通過這節(jié)課的學(xué)習(xí)活動(dòng)，你有什么收獲？課堂小結(jié)一兩、三位數(shù)乘一位數(shù)··························································1二

千克和克·········································································28三長(zhǎng)方形和正方形································································36周長(zhǎng)是多少······································································46四兩、三位數(shù)除以一位數(shù)·······················································48五解決問題的策略································································71間隔排列·········································································78六平移、旋轉(zhuǎn)和軸對(duì)稱··························································80七分?jǐn)?shù)的初步認(rèn)識(shí)（一）·······················································87多彩的“分?jǐn)?shù)條”·····························································96八期末復(fù)習(xí)·········································································98蘇教版三年級(jí)上冊(cè)解決問題的策略明確題意整理?xiàng)l件選擇策略