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Cubes & Cubes Roots Class 8 PPT

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CUBES AND CUBE ROOTS
Page 2


CUBES AND CUBE ROOTS
The index of a cube root is
always 3.
The cube root of 64 is written as                
.
3
64
Cube Roots
Page 3


CUBES AND CUBE ROOTS
The index of a cube root is
always 3.
The cube root of 64 is written as                
.
3
64
Cube Roots
What does cube root mean?
The cube root of a number is…
…the value when multiplied by itself 
three times gives the original number.
Page 4


CUBES AND CUBE ROOTS
The index of a cube root is
always 3.
The cube root of 64 is written as                
.
3
64
Cube Roots
What does cube root mean?
The cube root of a number is…
…the value when multiplied by itself 
three times gives the original number.
Cube Root Vocabulary
n
x
index
radicand
radical sign
Page 5


CUBES AND CUBE ROOTS
The index of a cube root is
always 3.
The cube root of 64 is written as                
.
3
64
Cube Roots
What does cube root mean?
The cube root of a number is…
…the value when multiplied by itself 
three times gives the original number.
Cube Root Vocabulary
n
x
index
radicand
radical sign
If a number is a perfect cube, then 
you can find its exact cube root.
A perfect cube is a number that can 
be written as the cube (raised to 
third power) of another number.
Perfect Cubes
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FAQs on Cubes & Cubes Roots Class 8 PPT

1. What is a cube in mathematics?
Ans. A cube in mathematics refers to a three-dimensional figure with six square faces of equal size. It is formed by multiplying a number by itself twice. For example, the cube of 3 is 3 x 3 x 3 = 27.
2. How do you find the cube of a number?
Ans. To find the cube of a number, you simply multiply the number by itself twice. For instance, if you want to find the cube of 4, you would calculate 4 x 4 x 4, which equals 64.
3. What is a cube root?
Ans. A cube root is the opposite operation of finding the cube of a number. It is the value that, when multiplied by itself twice, gives the original number. For example, the cube root of 125 is 5, since 5 x 5 x 5 equals 125.
4. How do you find the cube root of a number?
Ans. To find the cube root of a number, you can use either manual calculations or a scientific calculator. If you choose to manually calculate, you can make an estimate and then refine it through trial and error. Alternatively, many calculators have a cube root function that provides an accurate result.
5. What are some real-life applications of cubes and cube roots?
Ans. Cubes and cube roots have various applications in different fields. In architecture, for instance, cubes are used to design buildings with equal dimensions on all sides. In physics, cubes and cube roots are used in calculations involving volume and space. Additionally, in computer graphics, cubes are used to create three-dimensional models and objects.
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