A group of preschoolers has 63 boys and 27 girls. What is the ratio of boys to all children?

The answer is 63 to 90.

Other ways to show this are: 63:90 or 63/90

Explanation:

The first number would be the amount of boys there (we already know how many there are). The second number would be the total amount of students. To know the total number of students, We would have to add the number of boys and girls (63 + 27) to get the sum of 90.

Now, since we know the total amount of students, we know that the answer is 63 to 90.

63/90 63:90 just add all them together