Strand 3 Leaving Certificate Ordinary

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Certificate

Paid

Language

Level

Intermediate

Access

Free

Last updated on April 30, 2026 1:02 pm

Designed for the Irish Project Maths curriculum, this free course is useful to anyone who needs help understanding shapes and numbers calculations.

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Begin studying numbers and shapes for your Ordinary Level Leaving Certificate! This course is also suitable for anyone who needs a maths refresher on various numbers concepts. It uses real-life examples to explain the mathematical concepts connected to numbers and shapes. Review topics like geometric reasoning, numerous indices rules and various formulas for finding the area and volume of shapes (circles, triangles, trapeziums, etc.).

What You Will Learn In This Free Course

  • Outline numbers in the standard form…
  • Compute with indices when fractional…
  • Define what rational, irrational and…
  • Discuss what percentage profit is an…
  • Outline numbers in the standard form or scientific notation and back to decimal form
  • Compute with indices when fractional, index power 0, and negative
  • Define what rational, irrational and imaginary numbers are
  • Discuss what percentage profit is and the differences between mark-up and margin profit
  • Calculate percentage changes using multipliers
  • Calculate the depreciation of the value of items
  • Identify the two methods for calculating the annual percentage rate
  • Calculate the income tax, universal social charge and PRSI (Pay Related Social Insurance) on your paycheque
  • Calculate the area of a circle, triangle, trapezium and compound shapes
  • Calculate the volume and surface area of three-dimensional shapes and objects
  • Calculate the area of a sector, arc and segment of a circle
  • Strand 3 – Numbers and Shapes

    In this module, you will learn how to work with and solve number systems including indices, arithmetic series and geometric series. Financial maths, such as interest rates and percentages are covered too. You will also study how to calculate the area and volume of various objects and shapes.

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      Strand 3 Leaving Certificate Ordinary
      Strand 3 Leaving Certificate Ordinary
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