Basic Math Made Easy-Multiply by 5 trick

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Multiply by 5 trick
Use this math trick to multiply any number by 5
Here is how this Math trick work.
If the number is even, divide the number in half and add 25
If the number is odd, subtract 1.
Next, divide this number in half and add 25
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I came up with this on my own in like grade 2 and back then no one was understanding what I meant but I still use it today hahaha

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