1 whole is the same as 10 out of 10 or 4 out of 4.

2 4out of 7 red apples. 3 out of 7 green apples.

2 out of 2 or 10 out of 10 will be the one whole.

Teddy rodent have any pizza left because 6 out of 6 make one whole pizza.

When a fractions is equal to a whole, the numerator and the denominator are same.