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5. Squares, Square-Roots, Cubes and Cube-Roots
Home · Class 8 · Maths · Ref. Book · 5. Squares, Square-Roots, Cubes and Cube-Roots
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Q5 of 67 Page 97

Find the cubes of 10, 30, 100, 1000. What can you say about the zeros at the end?

103 = 1000


303 = 27000


1003 = 10,00,000


10003 = 1,00,00,00,000


The number of zeroes is always a multiple of 3


More from this chapter

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3

How many perfect cubes you can find from 1 to 100? How many from –100 to 100?

4

How many perfect cubes are there from 1 to 500? How many are perfect squares among these cubes?

6

What are the digits in the unit’s place of the cubes of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10? Is it possible to say that a number is not a perfect cube by looking at the digit in unit’s place of the given number, just like you did for squares?

1

Find the cube root by prime factorization:

1728

Questions · 67
5. Squares, Square-Roots, Cubes and Cube-Roots
1 2 3 4 5 1 2 3 4 1 1 1 1 2 3 1 1 1 1 1 2 2 2 2 2 2 3 4 5 1 2 3 1 2 3 4 5 6 1 1 1 1 1 2 2 2 3 1 2 2 2 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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