Mental evaluation with identities

Mental evaluation with identities

Secondary 2
TGM Original Questions

Without using a calculator, evaluate each of the following.

  1. \(1001^2+999^2-2(1001)(999)\)
  2. \(732008^2-732007^2\)
  3. \(1002^2\)
  4. \(68^2+16-544\)
  5. \(601^2-1202+1\)
  6. \(405^2\)

Solution:

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Answer:(a) \(4\); (b) \(1,464,015\); (c) \(1,004,004\); (d) \(4096\); (e) \(360,000\); (f) \(164,025\).

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