Millimeter is measure of length, incompatible with volume.
Four.
20ml in 4 metric teaspoons
That is approximately 4 teaspoons of sugar.
it depends on what you are measuring, for most cooking ingredients it can be between 4 and 10 teaspoons.
That is approximately 4 teaspoons.
That is 12 teaspoons.
It is 4 teaspoons.
That is 4 teaspoons .
40 millimeter = 4 centimeters
That is about 4 teaspoons
About 14 teaspoons.
4 ounces is 24 teaspoons. (1 ounce=6 teaspoons)