Fractions, % & Fast Estimation

The estimation shortcuts that make mental math fast.

Inside this lesson

Use 'round then adjust' to multiply awkward numbers
Break a number into easy parts and add the pieces
Convert the common fractions to percentages instantly
Estimate a percentage of a number in one step

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⚖️

Educational content only — not financial, investment, trading, tax, or legal advice, and not an inducement to buy or sell anything. Examples and figures are illustrative, use hypothetical data, and are not predictions. Independent educational material; third-party names are used descriptively and imply no affiliation.