How to Find the nth Triangular Number
Interactive Video
•
Mathematics, Science
•
4th Grade - University
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
The video tutorial explains how to find the NTH triangular number by visualizing dots as right-angled triangles and then forming rectangles. It introduces a formula to calculate triangular numbers and provides an example with n=4. The video concludes with practice questions for viewers to solve.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
For the 4th triangular number, what value of N is used in the example?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the relationship between the number of dots in the triangle and the rectangle?
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OFF
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