Curriculum
Mathematics — First Preparatory
Unit 1: Numbers
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Ratio and Proportion
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Ratio and Proportion — Lesson quiz
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Applications of Ratio and Proportion
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Applications of Ratio and Proportion — Lesson quiz
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Sets and Operations on Sets
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Sets and Operations on Sets — Lesson quiz
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Operations on Integers
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Operations on Integers — Lesson quiz
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Operations on Rational Numbers
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Operations on Rational Numbers — Lesson quiz
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Unit 2: Algebra
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Unit 3: Statistics
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Unit 4: Geometry
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Text lesson
Operations on Rational Numbers
Operations on Rational Numbers
Common mistakes
Common mistakes
- Adding the denominators together. The wrong answer 1/2 + 1/3 = 2/5 should be 5/6.
- Forgetting to multiply by the reciprocal of the second fraction when dividing.
- Writing a denominator equal to zero. A rational number cannot have zero as its denominator.
- Leaving the answer unsimplified. The answer 6/8 should be written as 3/4.
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