Te reo Māori terms
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Learning objective overview
Master Teaching Guide coverage for this objective.
Current NZC (2007)
GM5-4GM4-3
New NZC (2026)
NZC26-P4-MEA-MEA-P-Y10-03NZC26-P3-MEA-MEA-K-Y7-04
Resources
- CorbettMaths worksheet (L-shape)Questions PDF · Answers
- Beta: Various from chapter 15
Terminology
- composite shape
- l-shape
- decompose (or break apart)
Task goals
- Decompose an L-shape or composite shape into rectangles (or a rectangle with a piece removed), and decide whether the addition or subtraction method applies.
- Find the total area of an L-shape by splitting it into two rectangles and adding their areas (the addition method).
- Find the area of a rectangle with a smaller rectangular piece removed, by subtracting the missing piece's area from the whole (the subtraction method).
- Find both the area and the perimeter of a composite shape formed by a rectangle with a square corner removed.
Where this fits
What leads into this objective, and where it goes next.
Before
Volume of cubes and cuboids
You are here
Area of L-shapes and composite shapes
Know
Shapes can be decomposed or recomposed to help find their measurements (e.g. their perimeters, areas, and volumes).
Statement▸
Year 7 · Measurement · Measuring
NZC26-P3-MEA-MEA-K-Y7-04
For teachers
Need the fuller teaching notes for this objective? Open the Teacher guidance PDF.