Question

8. The numbers 3,6,10 can be written in triangular form. Represent the next 5 triangular
numbers by drawing dots.​

Answer 1

Answer:

These can be added in order to give the 10th triangular number as 55. They may also see that the 1st triangular number has one on the bottom, the 2nd two on the bottom, the 3rd three and so on.