Coaching Centre
Chapter 3: Fractions, decimals and percentages Notes
Operations with positive and negative fractions, terminating and recurring decimals, percentages of quantities, percentage increase and decrease, profit and loss, and the unitary method.
Sections
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3A Computation with fractions, including negatives Mastered
Adding, subtracting, multiplying and dividing fractions and mixed numerals, including negative fractions.
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3B Terminating and recurring decimals Mastered
Computing with decimals, converting fractions to terminating or recurring decimals, recurring decimal notation, and rounding.
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3C Finding percentages and expressing as a percentage Mastered
Converting between fractions, decimals and percentages, finding a percentage of a quantity, and writing one quantity as a percentage of another.
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3D Increasing and decreasing by a percentage Mastered
Increasing and decreasing amounts by a percentage using multipliers, with discounts, GST and mark-ups.
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3E Percentage change, profit and loss Mastered
Calculating percentage change, profit and loss, and percentage profit or loss based on the cost price.
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3F The unitary method and reverse percentages Mastered
Using the unitary method to find the original amount before a percentage change, and other percentage problems.