There are 5/2 1/10 teaspoons equal 1/4 teaspoon.

(1/4) tsp / (1/10) tsp = 10/4 tsp = 2-1/2

There are 2-1/2 tenth teaspoons in every fourth teaspoon.

To check: 4 times 2-1/2 tenth teaspoons should give 10 tenth teaspoons, or one full teaspoons.

4 x 2-1/2 = 10

There are 2-1/2 tenth teaspoons in every fourth teaspoon.

To check: 4 times 2-1/2 tenth teaspoons should give 10 tenth teaspoons, or one full teaspoons.

4 x 2-1/2 = 10