Monday, 6 June 2011

8th Cube and Cube root Test paper

8th Cube and cube root
1 Mark Each
1. Find the one.s digit of the cube of 3031
2. Without actually finding the cubes find the value of 21- 203
3. Is 32 a perfect cube?
4. Express 132 as the sum of two consecutive integers.
5. What will be the unit digit of the square of 3873?
6. Why 2332 is not perfect square ?
7. Cube of any odd number is even. Yes/No Why? 
2 Mark Each
8. Find the cube root of 27000.
9. Find the cube root of 17576 through estimation. 
3 Mark Each
8. Anubhav makes a cuboid of plasticine of sides 5 cm, 3 cm, 5 cm. How many such cuboids will he need to form a cube?
9. Is 5488 a perfect cube? If not, find the smallest natural number by which 5488 must be multiplied so that the product is a perfect cube
10. Is 5324 a perfect cube? If not, then by which smallest natural number should 5324 be divided so that the quotient is a perfect cube?

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