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Topic 2 · Lessons

Percentage, Decimal, Fraction

Convert between forms and solve percent problems.

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📘 Step-by-step lessons

They are three ways of saying the same thing.

  1. 1

    % → decimal

    Divide by 100 (move the point 2 left).

    45% = 0.45
  2. 2

    Decimal → %

    Multiply by 100 (move the point 2 right).

    0.7 = 70%
  3. 3

    Fraction → decimal

    Divide top by bottom.

    3/5 = 3 ÷ 5 = 0.6
  4. 4

    Fraction → %

    Convert to a decimal, then × 100.

    3/5 = 0.6 = 60%