Hi Thrilokesh, Hint -https://www.teachoo.com/1060/414/Ex-2.5-2---Evaluate-the-products-without-multiplying-directly/category/Ex-2.5/ 999× 999 = (1000 - 1)× (1000 - 1) = (1000

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How to multiply 999 by 999 without actual multiplication?

Davneet Singh

Hi Thrilokesh,

Hint - https://www.teachoo.com/1060/414/Ex-2.5-2---Evaluate-the-products-without-multiplying-directly/category/Ex-2.5/

999 × 999 = (1000 - 1) × (1000 - 1)

= (1000 - 1)²

= 1000² + 1² - 2 × 1000 × 1

= 1000000 + 1 - 2000

= 998001

Written on July 11, 2017, 6:56 p.m.

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