How do I calculate a percentage in my head?

Use building blocks: 10% is easy (move decimal left), 5% is half of 10%, 1% is the number divided by 100.

What is the easiest way to find 10% of any number?

Simply move the decimal point one place to the left. 10% of 350 = 35.

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How do I calculate a percentage in my head?: Use building blocks: 10% is easy (move decimal left), 5% is half of 10%, 1% is the number divided by 100.
What is the easiest way to find 10% of any number?: Simply move the decimal point one place to the left. 10% of 350 = 35.