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Download VIDYA BHARATI SCHOOL OLYMPIAD WORKSHEET JUNE 2015
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VIDYA BHARATI SCHOOL OLYMPIAD WORKSHEET JUNE 2015 Grade : VIII Subject : MATHEMATICS 1.A number is multiplied by half of itself and then 32 is added to the product. If the final result is 130 , then find the original number. a. 5 b. 4 c. 7 d. 14 2. The square root of 390625 isa. 225 b.645 c. 735 d. 625 3. Square numbers can only have ------------- at the end . a. odd number of zeroes b.even number of zeroes c.both a&b d. none 4.A number is multiplied by 2 1/3 times itself and then 61 is subtracted from the product obtained.If the final result is 9200 , then the number isa. 36 b.63 c.67 d.37 5.Which of the following is not a perfect square? a. 16384 b.23857 c.18496 6.If 3(x-2)2 = 507 , then x can be a.13 b.12 c.15 d.11025 d.14 7.The squarebroot of 36/5 correct to two decimal places is a. 2.68 b. 2.69 c.2.67 d. 2.66 8.The number must be subtracted from 16161 to get a perfect square isa.31 b.32 c. 33 d.34 9.The smallest square number which is exactly divisible by each of the number 6,9 and 15,isa.100 b. 400 c. 900 d.1024 10.Square root of 0.081/0.0064 x 0.484/6.25 x 2.5/12.1 is a. 0.45 b.0.75 c.0.95 d. 0.99 11.The greatest six digit nuber,which is a perfect square isa.998001 b.995001 c.997001 d.9960 12.Which of the following numbers could be a perfect square? a. 1258 b. 78497 c.354823 d.913936 13.Which of the foolowing numbers given here is not a perfect square? a.3136 b.3844 c.6889 d.4290 14.The square of 86 is equal to a.6436 b.7396 c.6496 d.8136 15.1+3+5+7+9+11+13+15+17+19+21 is equal to a.92 b.132 c.112 d.none 16.The eighth term of a triangular number isa. 8 b. 36 c.28 d.none 17.The number of whole numbers between 132 and 142 is equal to a.26 b.27 c.28 d.none 18.The prime fectorisation of a number is 2x2x2x3x3x5x5x5. Its square root isa.75 b.30 c.90 d.none 19.The number of digits in the square of the number 456 is equal to a. 3 or 4 b. 5or 6 c.4 or 5 d.6 or 7 20.The sum of two consecutive triangular numbers is equal to the square of a.the smaller term number b.the larger term number c.the term number previous to the smaller term number d.the term number next to the larger term number. Click www.imo-official.org for more practice material.
