How to Work Out Percentages Quickly and Accurately

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To work out percentages quickly and accurately, convert the percentage to a decimal by moving the decimal point two places left, then multiply by the number. For example, 15% of 80 becomes 0.15 times 80, which is 12. For a shortcut, find 10% first by moving one decimal place, then double or halve from there. This method cuts down on errors and speeds up mental math, especially when shopping or tipping.