云南省普洱市西盟佤族自治縣2025-2026學年三年級上學期期中考試數(shù)學試卷注意事項：1．答題前，考生先將自己的姓名、準考證號填寫清楚，將條形碼準確粘貼在考生信息條形碼粘貼．2．選擇題必須使用2B鉛筆填涂；非選擇題必須使用0.5黑色字跡的簽字筆書寫，字體工整、筆跡清楚．3．請按照題號順序在各題目的答題域內(nèi)作答，超出答題域書寫的答案無效；在草稿紙、試題卷上答題無效．4．保持卡面清潔，不要折疊，不要弄破、弄皺，不準使用涂改液、修正帶、刮紙刀．一、填空題．1．一個長方形的長是20厘米，寬是長的$$\frac13$$，這個長方形的周長是________厘米。2．要使425×□的積是三位數(shù)，□內(nèi)最大可以填（________）；被減數(shù)是800，減數(shù)是600，如果被減數(shù)和減數(shù)都增加200，差是（________）。3．在橫線里填上合適的單位名稱．小華每天晚上8_________上床睡覺，睡眠時間是8_________．4．觀察每組中的第一道算式，照樣子把下面的算式填完整。（1）48×6＝240＋____72×7＝____＋____（2）81÷9＝9＋____78÷6＝____＋____5．小明坐了2時的公交車去公園，到家時剛好是20時。小明是上午________時上車的。6．8元5角=________元

2.07米=________米________厘米0.15噸=________千克

6時=________分7．在（）里填上“>”“<”或“=”。（1）0.3元________3角（2）8.9元________8.6元（3）2元5分________2元5角（4）70分________7元（5）0.5米________50厘米（6）1.5米________1.2米8．公園里種著一排松樹，每兩棵樹之間相距4米．小華從第1棵樹跑到第50棵樹，一共跑了_____米．9．鐘面上的秒針從12走到4是________秒；分針走1小格，秒針從12走到________。10．在（）里填合適的單位．①一個籃球重500________．②課桌的高度大約是7________．③一只鴨子重3________．④一節(jié)體育課的時間是50________．二、判斷題．（對的打√，錯的打×）1．1噸鐵與1000千克棉花一樣重.________2．20個0.1米是2米。________3．5035200略萬位后面的尾數(shù)約是504萬．________4．4個小朋友折紙鶴，每人折了8只，現(xiàn)在需要折120只，還要折多少只？算式是(120-4)×8

。________5．時針在4和5之間，分針指著3，是4：15．________6．一年中有些月份是三十天，有些月份是三十一天。________7．家用臉盆的周長約為2米。________8．小明家有5棵桃樹，梨樹的棵數(shù)是桃樹的2倍，小明家有梨樹10棵．________9．6時整，時針、分針重合．________10.一棵大樹高約18米。三、選擇題．（把正確答案的序號填在括號里）1.小麗7:30從家出發(fā)，8:10到學校，路上用了多長時間？________A.20分鐘B.40分鐘C.1小時2.1米長的繩子，用去了70厘米，還剩________。A.30厘米B.70米C.130厘米3.一座教學樓高約________。A.5米B.50米C.500米4.面向北方，你的左邊是________。A.西B.東C.南5.有24個蘋果，平均分給4個小朋友，每個小朋友分到幾個？列式為________。A.24÷4B.24-4C.4÷246.最大的三位數(shù)與最小的三位數(shù)的差是________。A.999B.1C.10007.下面的數(shù)中，一個零也不讀的是________。A.100B.1000C.100008.用3、4、0這三個數(shù)字組成的最大的三位數(shù)是________。A.340B.430C.4339.買一個書包需要80元，付給售貨員100元，應找回________元。A.180B.20C.6010.媽媽買了4個蘋果，買的香蕉的個數(shù)是蘋果的3倍，媽媽買了多少個香蕉？________A.12個B.16個C.8個四、計算題．1．直接寫得數(shù)．72＋45÷9=________

64÷(36－24)=________118－(58＋27)=________

(29－19)×5=________4×(52－42)=________

(15＋17)÷8=________2．口算80×5時，先把80前面的________和5相乘得40，再看________后面有________個0，有________個0就在40五、操作題．1.請用尺子量出你數(shù)學課本的長度和寬度，并記錄下來。長度：________厘米寬度：________厘米2.媽媽買了10個蘋果，平均放在2個盤子里。請你用畫圖的方式表示每個盤子放幾個蘋果。六、應用題．（每題4分，共24分）1.圖書館有童話書90本，借出去40本，還剩下多少本？2.小華有26張郵票，小剛比小華多20張，小剛有多少張郵票？3.一個鉛筆盒3元，一個書包比鉛筆盒貴2元，一個書包多少元？4.三年級一班有45名同學，二班有50名同學，兩個班一共有多少名同學？5.媽媽買了58個蘋果，吃了18個，還剩多少個？6.學校籃球隊有男生20人，女生比男生多5人，女生有多少人？試卷答案一、填空題答案：1．一個長方形的長是20厘米，寬是長的$$\frac13$$，這個長方形的周長是（20×2+20×$$\frac13$$×2）=（40+$$\frac403$$）=（$$\frac1603$$）≈53.33厘米。2．要使425×□的積是三位數(shù)，□內(nèi)最大可以填（2）；因為425×3=1275，已經(jīng)超過三位數(shù)，所以最大只能填2。被減數(shù)是800，減數(shù)是600，如果被減數(shù)和減數(shù)都增加200，差是（800+200）-（600+200）=1000-800=200。3．在橫線里填上合適的單位名稱。小華每天晚上8時上床睡覺，睡眠時間是8小時。4．觀察每組中的第一道算式，照樣子把下面的算式填完整。（1）48×6＝240＋18（2）72×7＝504＋18（1）81÷9＝9＋0（2）78÷6＝13＋05．小明坐了2時的公交車去公園，到家時剛好是20時。小明是上午10時上車的。6．8元5角=8.5元

2.07米=2米7厘米0.15噸=150千克

6時=360分7．在（）里填上“>”“<”或“=”。（1）0.3元<3角（2）8.9元>8.6元（3）2元5分<2元5角（4）70分<7元（5）0.5米=50厘米（6）1.5米>1.2米8．公園里種著一排松樹，每兩棵樹之間相距4米．小華從第1棵樹跑到第50棵樹，一共跑了（50-1）×4=196米。9．鐘面上的秒針從12走到4是（4×5）=20秒；分針走1小格，秒針從12走到（1×5）=5秒。10．在（）里填合適的單位．①一個籃球重500克．②課桌的高度大約是7分米．③一只鴨子重3千克．④一節(jié)體育課的時間是50分鐘．二、判斷題答案：1．×1噸鐵與1000千克棉花重量不同，因為鐵的密度大于棉花。2．√20個0.1米等于2米，因為0.1米×20=2米。3．×5035200略萬位后面的尾數(shù)約是504萬，而不是503萬。4．×算式應該是(120-4)×8=104×8=832，所以還要折832-104=728只。5．√時針在4和5之間，分針指向3，是4時15分。6．×一年中有些月份是30天，有些月份是31天，只有二月可能是28天或29天。7．×家用臉盆的周長通常遠小于2米。8．√小明家有5棵桃樹，梨樹的棵數(shù)是桃樹的2倍，所以梨樹有5×2=10棵。9．×6時整，時針和分針不重合。10．×一棵大樹高約18米不符合實際，大樹的高度通常在幾米到幾十米之間。三、選擇題答案：1.B1小時2.A30厘米3.B50米4.A東5.A24÷46.A9997.B10008.C4309.B2010.B12個四、計算題答案：1．72＋45÷9=72＋5=7764÷(36－24)=64÷12=5.33（保留兩位小數(shù)）118－(58＋27)=118－85=33(29－19)×4=10×4=404×(52－42)=4×10=40(15＋17)÷8=32÷8=42．口算80×5時，先把80前面的8和5相乘得40，再看80后面有1個0，有1個0就在40后面加一個0，所以答案是400。五、操作題答案：1．長度：______厘米寬度：______厘米（此處需要學生測量后填寫）2．畫圖如下：盤子1：△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△