Read and download NCERT Book Class 8 Maths Cubes and Cube Roots in NCERT book for Class 8 Mathematics. You can download latest NCERT books PDF chapterwise free from Studiestoday.com. This Mathematics textbook for Class 8 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 8 Mathematics to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 8 Mathematics Chapter 7 Cubes and Cube Roots
Class 8 Mathematics students should refer to the following NCERT Book Chapter 7 Cubes and Cube Roots in Class 8. This NCERT Book for Class 8 Mathematics will be very useful for exams and help you to score good marks
Chapter 7 Cubes and Cube Roots NCERT Book Class 8
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7.1 Introduction
This is a story about one of India’s great mathematical geniuses, S. Ramanujan. Once another famous mathematician Prof. G.H. Hardy came to visit him in a taxi whose number was 1729. While talking to Ramanujan, Hardy described this number “a dull number”. Ramanujan quickly pointed out that 1729 was indeed
interesting. He said it is the smallest number that can be expressed as a sum of two cubes in two different ways:
1729 = 1728 + 1 = 123 + 13
1729 = 1000 + 729 = 103 + 93
1729 has since been known as the Hardy – Ramanujan Number, even though this feature of 1729 was known more than 300 years before Ramanujan.
How did Ramanujan know this? Well, he loved numbers. All through his life, he experimented with numbers. He probably found numbers that were expressed as the sum of two squares and sum of two cubes also.
There are many other interesting patterns of cubes. Let us learn about cubes, cube roots and many other interesting facts related to them.
7.2 Cubes
You know that the word ‘cube’ is used in geometry. A cube is a solid figure which has all its sides equal. How many cubes of side 1 cm will make a cube of side 2 cm? How many cubes of side 1 cm will make a cube of side 3 cm? Consider the numbers 1, 8, 27, ...
These are called perfect cubes or cube numbers. Can you say why they are named so? Each of them is obtained when a number is multiplied by taking it three times.
Please refer to attached file for NCERT Class 8 Maths Cubes and Cube Roots
NCERT Book Class 8 Maths Rational Numbers |
NCERT Book Class 8 Maths Linear Equations in One Variable |
NCERT Book Class 8 Maths Understanding Quadrilaterals |
NCERT Book Class 8 Maths Practical Geometry |
NCERT Book Class 8 Maths Data Handling |
NCERT Book Class 8 Maths Squares and Square Roots |
NCERT Book Class 8 Maths Cubes and Cube Roots |
NCERT Book Class 8 Maths Comparing Quantities |
NCERT Book Class 8 Maths Algebraic Expressions and Identities |
NCERT Book Class 8 Maths Visualising Solid Shapes |
NCERT Book Class 8 Maths Mensuration |
NCERT Book Class 8 Maths Exponents and Powers |
NCERT Book Class 8 Maths Direct and Inverse Proportions |
NCERT Book Class 8 Maths Factorisation |
NCERT Book Class 8 Maths Introduction to Graphs |
NCERT Book Class 8 Maths Playing with Numbers |
NCERT Book Class 8 Maths Answers and Solutions |
NCERT Book Class 8 Mathematics Chapter 7 Cubes and Cube Roots
The above NCERT Books for Class 8 Mathematics Chapter 7 Cubes and Cube Roots have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 7 Cubes and Cube Roots Mathematics Class 8 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 7 Cubes and Cube Roots NCERT etextbooks as the exams for Class 8 Mathematics are always asked as per the syllabus defined in these ebooks. These Class 8 Chapter 7 Cubes and Cube Roots book for Mathematics also includes collection of question. Along with Mathematics Class 8 NCERT Book in Pdf for Chapter 7 Cubes and Cube Roots we have provided all NCERT Books in English Medium for Class 8 which will be really helpful for students who have opted for english language as a medium. Class 8 students will need their books in English so we have provided them here for all subjects in Class 8. You can download free NCERT Mathematics Class 8 Textbook PDF and all chapters by clicking on the links above
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