Mathematics
Grade10
Easy

Question

Find the product. 102cross times98

  1. 9996
  2. 9876
  3. 9596
  4. 9436

The correct answer is: 9996


    102cross times98 = (100 + 2)(100 – 2)
    Using the pattern (a + b)(a – b) = a2 – b2,
    100 + 2)(100 – 2) = 1002 – 22 = 10000 – 4 = 9996

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