#### Chapters

Chapter 2: Linear Equations in One Variable

Chapter 3: Understanding Quadrilaterals

Chapter 4: Practical Geometry

Chapter 5: Data Handling

Chapter 6: Squares and Square Roots

Chapter 7: Cubes and Cube Roots

Chapter 8: Comparing Quantities

Chapter 9: Algebraic Expressions and Identities

Chapter 10: Visualising Solid Shapes

Chapter 11: Mensuration

Chapter 12: Exponents and Powers

Chapter 13: Direct and Inverse Proportions

Chapter 14: Factorisation

Chapter 15: Introduction to Graphs

Chapter 16: Playing with Numbers

#### NCERT Mathematics Class 8

## Chapter 7: Cubes and Cube Roots

#### Chapter 7: Cubes and Cube Roots Exercise 7.10 solutions [Page 114]

The following numbers are not perfect cubes?

216

The following numbers are not perfect cubes?

128

The following numbers are not perfect cubes?

1000

The following numbers are not perfect cubes?

100

Which of the following numbers are notperfect cubes?

46656

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

243

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

256

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

72

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

675

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

100

Find the smallest number by which the following number must be divided to obtain a perfect cube.

81

Find the smallest number by which the following number must be divided to obtain a perfect cube.

128

Find the smallest number by which the following number must be divided to obtain a perfect cube.

135

Find the smallest number by which the following number must be divided to obtain a perfect cube.

192

Find the smallest number by which the following number must be divided to obtain a perfect cube.

704

Parikshit makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such cuboids will he need to form a cube?

#### Chapter 7: Cubes and Cube Roots Exercise 7.20 solutions [Page 116]

Find the cube root of the following numbers by prime factorisation method.

64

Find the cube root of the following numbers by prime factorisation method.

512

Find the cube root of the following numbers by prime factorisation method.

10648

Find the cube root of the following numbers by prime factorisation method.

27000

Find the cube root of the following numbers by prime factorisation method.

15625

Find the cube root of the following numbers by prime factorisation method.

13824

Find the cube root of the following numbers by prime factorisation method.

110592

Find the cube root of the following numbers by prime factorisation method.

46656

Find the cube root of the following numbers by prime factorisation method.

175616

Find the cube root of the following numbers by prime factorisation method.

91125

State true or false.

Cube of any odd number is even.

True

False

State true or false.

A perfect cube does not end with two zeroes.

True

False

State true or false.

If square of a number ends with 5, then its cube ends with 25.

True

False

State true or false

There is no perfect cube which ends with 8.

True

False

State true or false.

The cube of a two digit number may be a three digit number.

True

False

State true or false.

The cube of a two digit number may have seven or more digits.

True

False

State true or false.

The cube of a single digit number may be a single digit number.

True

False

You are told that 1331 is a perfect cube. Can you guess without factorization what is its cube root? Similarly, guess the cube roots of 4913, 12167, 32768

## Chapter 7: Cubes and Cube Roots

#### NCERT Mathematics Class 8

#### Textbook solutions for Class 8

## NCERT solutions for Class 8 Mathematics chapter 7 - Cubes and Cube Roots

NCERT solutions for Class 8 Maths chapter 7 (Cubes and Cube Roots) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Mathematics Textbook for Class 8 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Mathematics chapter 7 Cubes and Cube Roots are Introduction of Cubes and Cube Root, Cube Root of a Cube Number, Cube Root Through Prime Factorisation Method, Smallest Multiple that is a Perfect Cube, Some Interesting Patterns, Introduction for Cubes.

Using NCERT Class 8 solutions Cubes and Cube Roots exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 8 prefer NCERT Textbook Solutions to score more in exam.

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