Two composite rectilinear shapes, an L-shape and a T-shape, make up this short Year 5 maths worksheet. Pupils convert measurements, deduce four missing side lengths, then calculate each shape's perimeter, crossing values off a six-number word bank as they go. Explained answers for parts A to F are included. It practises the England National Curriculum composite perimeter objective.
Measurement
“Measure and calculate the perimeter of composite rectilinear shapes in centimetres and metres”
Both shapes need deduced sides before the perimeter can be totalled.
Measurement
“Convert between different units of metric measure (for example, kilometre and metre; centimetre and metre; centimetre and millimetre; gram and kilogram; litre and millilitre)”
Measurements must be converted before they can be combined.
Six values, from 2 m to 36 m, that pupils cross off as they find each answer.
Labelled diagrams with blanks A to F for missing sides and total perimeters.
Explanations for all six answers, not just the values.
Main activity
The word bank gives instant self-checking, so it suits independent work.
Guided group
Model deducing the first missing side, then let the group finish.
Assessment check
Wrong crossed-off values show exactly where the reasoning broke down.
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