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The word ‘cube’ is used in geometry. A cube is a solid figure which has all its sides equal.

There are only ten perfect cubes from 1 to 1000.

If a number is a number, then the cube of a is a

a x a x a = a

1. 2

2. 3

3. 4

4. (1.2)

5. (2/3)

A natural number is said to be a perfect cube if it is the cube of some natural number.

8 = 2 x 2 x 2

8 = 2

8 is the perfect cube because it is a cube of 2 which is a natural number.

But 12 is not a perfect cube because it is not a cube of any natural numbers.

1) 6

2) (-7)

3) b

4) (1/8)

5) (0.5)

1) 125

2) 15

3) 27

4) 36

5) 343

6) m

7) 1/8

8) 27/216

9) -1/64

10) 49/729

• Cube of Numbers

• Perfect-Cube

• Properties - Cube

• Cube by Column method

• Negative numbers-cube

• Cube - Rational numbers

• Cube-Root

• Finding cube root by Prime Factorization

• Cube root of Rational numbers

• Estimating cube-root

8th grade math

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