成人快手

  • Ratio, proportion and rates of change

    • Ratio in context - OCR

      Ratios are seen in everyday life. They can be used when adding ingredients to make a meal, when deciding how much pocket money children get or when reading a map.

    • Percentages - OCR

      Percentages are used in everyday life, for example, calculating discounts during sales and interest rates at banks. Knowing how to find and use percentages is an important skill.

    • Direct and inverse proportion - OCR

      Proportion is used to show how quantities and amounts are related to each other. The amount that quantities change in relation to each other is governed by proportion rules.

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