CBSE Class 8 Mathematics — Chapter Summary

Squares and cubes are important number patterns in arithmetic and geometry. A square number is formed by multiplying a number by itself, and a cube number is formed by multiplying a number by itself three times. The chapter also connects these ideas to locker puzzles, factor pairs, odd numbers, unit

Percentages are fractions with denominator 100. They help compare quantities, show change, and describe profit, loss, interest, discount, inflation, and depreciation. A percentage can be written as a fraction, decimal, or ratio, and the same idea can be used in many different situations. The chapter

Power Play presents the idea that some quantities grow by addition and others grow by multiplication. Folding paper shows exponential growth, where thickness doubles at every fold. Locks, powers, scientific notation, and large-number comparisons all use this idea to make very big and very small quan