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CHAPTER AT A GLANCE
A Square and a Cube
•Unit: Number System
•Board weightage: Squares, square roots, cubes and cube roots give regular 1-mark, 2-mark and 3-mark questions (please check the latest sample paper)
•Key ideas from the textbook: patterns in squares, units digits, sums of odd numbers, square roots by prime factorisation and estimation, cubes, cube roots by prime factorisation, the number 1729
•Most scoring part: finding the smallest number to multiply or divide so that a number becomes a perfect square or a perfect cube
•Time to revise: about 60 minutes
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