So you can multiply any large number by 11 using this method and the answer can be given at a glance. For example, if you want to multiply 11 by 25, you write the first and last number as it is and write the sum of the unit digit and the tens digit in the middle. Watch the above Image for a clear understanding. It comes seriously handy when you’re doing questions of simplification and approximation and data interpretations. It also comes in handy when you’re doing any questions that involve large calculations.
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A Romanticist who is trying to understand this world by reading books. You can also follow me on YouTube, I post there quite often.
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