Triangle numbers are formed by building triangle patterns as follows:
You can draw these shapes or use addition to continue the sequence.
You should learn at least the first few triangle numbers....
1, 3, 6, 10, 15, 21, 28 .....
In this worksheet, students recognise the sequence of triangles and add in missing numbers.
Key stage: KS 2
Year: Year 5 Maths worksheets
Curriculum topic: Number: Number and Place Value
Curriculum subtopic: Solve Number Problems to 1 000 000
Difficulty level:
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