Class 8MathematicsCubes and Cube Roots

What are Cubes?

Cube of a number = n × n × n = n³. A perfect cube is a number whose cube root is an integer. Perfect cubes up to 20³: 1,8,27,64,125,216,343,512,729,1000,1331,1728,2197,2744,3375,4096,4913,5832,6859,8000. The units digit pattern: 1³→1, 2³→8, 3³→7, 4³→4, 5³→5, 6→6, 7→3, 8→2, 9→9, 0→0.

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10 example pages

Concept check 1

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Definition to application 2

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Formula warm-up 3

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Reasoning practice 4

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Board-style short answer 5

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Mistake correction 6

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Visual interpretation 7

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Applied word problem 8

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Revision challenge 9

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Exam recap 10

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