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Triangle Numbers: Follow the Sequence Worksheet - EdPlace - Free Printable

Educational worksheet: Triangle Numbers: Follow the Sequence Worksheet - EdPlace. Download and print for classroom or home learning activities.

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Show Answer Key & Explanations Step-by-step solution for: Triangle Numbers: Follow the Sequence Worksheet - EdPlace

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- The pattern shows a sequence of triangular numbers.
- The first triangle has 1 small triangle, labeled with the number 1.
- The second triangle has 3 small triangles (1 + 2), labeled with the number 3.
- The third triangle has 6 small triangles (1 + 2 + 3), labeled with the number 6.
- The fourth triangle has 10 small triangles (1 + 2 + 3 + 4), so it should be labeled with the number 10.
- The nth triangular number is given by the formula T(n) = n(n+1)/2.
- For the fourth triangle, n=4, so T(4) = 4*5/2 = 10.

Parent Tip: Review the logic above to help your child master the concept of triangular numbers worksheet.

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