2023年袋鼠數(shù)學(xué)競賽(Math Kangaroo)小學(xué)高年級(jí)競賽數(shù)學(xué)試卷

2023年袋鼠數(shù)學(xué)競賽(MathKangaroo)小學(xué)高年級(jí)競賽數(shù)學(xué)試卷Holgcrfillstherestofthetablewithth3numbersupto40,followingthesystemshown:Holgcr按照下圖所示的規(guī)則繼續(xù)填充表格，一直到數(shù)字．Whichofthepiecesshowncouldhecutfromthetable?下面哪個(gè)部分可以從這個(gè)表格中截取出來？A.B.C.D.E.2Matchstickscanbeplacedtobuildnumbers,asshown.Forexample,tobuildthenumber15,oneneeds7matchsticks,andoneneedsthesamenumberofmatchstickstobuildthenumber8.如圖所示，可以用火柴棍拼成數(shù)字．例如，要拼成數(shù)字15,需要根火柴棍，拼成數(shù)字需要相同數(shù)量的火柴棍．Whatisthelargestpositivenumberthatcanbebuiltwithsevenmatchsticks?七根火柴棍可以拼成的最大正數(shù)是多少？A.31B.51C.74D.711E.8003Whichofthefollowingshapescannotbedividedintotwotrianglesbyasinglestraightline?以下哪個(gè)圖形不能用一條直線分成兩個(gè)三角形？A. B..C.D.E.4Rosalindehasapieceofpaper,markedasshown,whichshefoldstoformacube.Whichofthefollowingfivecubescanshegetfromthispaper？Rosalinde有一張畫有圖案的紙，如圖所示．將這張紙折疊成一個(gè)立方體．以下五個(gè)立方體中，哪一個(gè)是由這張紙折疊而成的？A.B.C.D.E.5Claudeclimbsfromthebottomtothetopofthecylindricaltowershown.Thestepsareallequalsized.Ninestepsarevisible.Howmanystepsarenotvisible?Claude從如圖所示的圓柱塔底部爬到頂部，所有臺(tái)階的大小都相同．現(xiàn)在可以看見九個(gè)臺(tái)階，請問有多少個(gè)臺(tái)階看不見？A.9B.10C.11D.12E.136Annahasfivecirculardiscsofdifferentsizes.Shewantstobuildatoweroffourdiscssothateachdiscinhertowerissmallerthanthediscimmediatelybelowit.HowmanydifferenttowerscouldAnnabuild?有五個(gè)大小不同的圓盤．她想用其中四個(gè)圓盤建造一座塔，使得塔中的每個(gè)圓盤都比緊鄰其下方的圓盤?。梢越ㄔ於嗌僮煌乃?？A.4.B.5C.9D.12E.207ThepictureshowsaparcelaroundwhichfourtapesIabelledM,N,PandQareplaced.下圖是一個(gè)包裹，周圍捆綁著條標(biāo)記為M、N、P和Q的膠帶．Inwhatorder,fromfirsttolast,werethetapesplaced?這四條膠帶捆綁包裹的先后順序是什么？A.M,N,Q,PB.N,M,P,QC.N,Q,M,PD.N,M,Q,PE.Q,N,M,P8Alicehasthefourpuzzlepiecesshown.Alice有四塊拼圖，如下所示．Whichpaircanbecombinedtoformthishexagon?哪一對(duì)拼圖可以拼成下方六邊形？A.1and2

1和2B.1and3

1和3C.2and3

2和3D.2and4

2和4E.1and4

1和49Thegreycirclewiththreeholespunchedinitisplacedontopoftheclock-face.將打有三個(gè)孔的灰色圓盤放在鐘面上．Thegreycircleisturnedarounditscenter.Whichthreenumbersisitpossibletoseeatthesametime?繞灰色圓盤中心旋轉(zhuǎn)，可以同時(shí)看到下面哪三個(gè)數(shù)字？A.2,4and9

2,4和9B.1,5and10

1,5和10C.4,6and12

4,6和12D.3,6and9

3,6和9E.5,7and12

5,7和1210Jontegluedthethreepiecesofpapershownontotheblackcircleontheright.Jonte