Are you looking for DAV Maths Solutions for class 8 then you are in right place, we have discussed the solution of the chapter Cube and Cube Roots Mathematics book Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!
Unit 2 Worksheet 1 | DAV SOLUTIONS CLASS 8 Secondary Mathematics
1. Find the cubes of —(i) 8 (ii) 13 (iii) 17 (iv) 1.3 (v) 0.06 (vi) 0.4 (vii) 2/3 (viii) —7
Answer 1:
2. Which of the following numbers are perfect cubes?
(i) 4096 (ii) 108 (iii) 392 (iv) — 27000 (v) —64/1331
Answer 2:
3. Find the smallest number by which 2560 must be multiplied so that the product is a perfect cube.
Answer 3:
4. Find the smallest number by which 8788 be divided so that the quotient is a perfect cube.
Answer 4:
5. Write true or false for the following statements:
(i) 650 is not a perfect cube.
Answer 5(i): True
(ii) Perfect cubes may end with two zeros.
Answer 5(ii): False
(iii) Perfect cubes of odd numbers may not always be odd.
Answer 5(iii): False
(iv) Cube of negative numbers are negative. (v) For a number to be a perfect cube, it must have prime factors in pairs.
Answer 5(iv): True
(v) For a number to be a perfect cube, it must have prime factors in pairs.
Answer 5(v): True
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