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How can you use mental math to multiply two numbers?

User Jedidiah
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1 Answer

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Answer: Break the numbers you're multiplying into parts.

Explanation:

What I find helps is splitting up the numbers and later adding them back together. An example of this is:

29×14

First I'd do 29×10, and get 290

Then 20×4, followed by 9×4, resulting in 80 and 36 respectively

Finally, 290+80+36= 406

I find the simplest numbers in the problem (2,5,10,20, etc.) and multiply from there. This may not be the best trick, but this is what I find helps. I hope this may help you too, and I wish you the best of luck.

User Travis Griggs
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