小升初英文奥数题.doc

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1、英文奥数1．maths(English)1）FindthesumofalltheprimenumbersBetween20and30.2）Dividethesumofthefirstfiveoddnumbersbythesumofthefirsttwoprimenumbers.3）Subtract2fromthesumofthefirstfiveevennumbers.Thedifferenceisthendividedbythefirstoddnumberfollowing5.Whatisthequotient?4）Findtheval

2、ueof[4+8]÷[5×4-6]andgivetheanswercorrectto2decimalplaces1）Alltheprimenumbersbetween20and30are23and29，ThesumofalltheprimenumbersBetween20and30=23+29=522）Thefirstfiveoddnumbersare1,3,5,7and9Thesumofthefirstfiveoddnumbers=1+3+5+7+9=253）Thefirsttwoprimenumbersare2and3Thesumof

3、thefirsttwoprimenumbers=2+3=54）Thefirstfiveevennumbersare2,4,6,8and10Thesumofthefirstfiveevennumbers=2+4+6+8+10=305）Thedifferencebetweenthesumofthefirstfiveevennumbersand2=30-2=286）Thefirstoddnumberfollowing5is7Thequotient=28/7=47）Thevalueof[4+8]÷[5×4-6]=12÷(20-6)=12÷14=0

4、.86(Corr.to2decimalplaces)2．Sixtreesareequallyspacedalongonesideofastraightroad.thedistancefromthefirsttreetothefourthis60feet.whatisthedistanceinfeetbetween.Thefirstandlasttrees?3．Attheendof 2005walterwashalfasoldashasgrandmother.Thesnmoftheyearsinwhichtheywerebornis3860

5、.howoldwillwalterbeattheendof2006?4．Thedigits1,2,3,4and9areeachusedoncetoformthegreatestpossibleevenfive-digitnumber.Whatisthedigitinthetensplace?*************************************************1、In 2004, 16 June falls on a Wednesday. On what day of the week will 16 June

6、 fall in 2010?2、 In a magic square the sum of the numbers in each row, in each diagonal and in each column are equal.  In this magic square the value of x is:3、If half of a number is 30, then three-quarters of that number is____.4、The sum of the digits of the following pr

7、oduct999×5555．Three positive integers have a sum of 28. The greatest possible product that these integers can have is_____.6、Jack was trying to tessellate regular pentagons. He managed thefollowing figure.The size of angle .a. is______.7、If the area of the shaded region o

8、f the regular hexagon in the diagrambelow is 36 cm2, the area of the whole hexagon in cm2 is____