Christmas Math

Front

What is a fraction?

Back

A fraction represents a part of a whole. It is written as two numbers separated by a slash, like 1/2, where the top number (numerator) shows how many parts we have, and the bottom number (denominator) shows how many equal parts the whole is divided into.

Front

What does the numerator in a fraction represent?

Back

The numerator is the top number in a fraction. It represents how many parts of the whole are being considered.

Front

What does the denominator in a fraction represent?

Back

The denominator is the bottom number in a fraction. It shows how many equal parts the whole is divided into.

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators. For example, 1/4 + 2/4 = (1+2)/4 = 3/4.

Front

How do you find the total number of items if you know the number of groups and items per group?

Back

Multiply the number of groups by the number of items in each group. For example, if there are 3 groups with 4 items each, the total is 3 x 4 = 12 items.

Front

If there are 12 elves and each can wrap 10 presents in an hour, how many presents can they wrap in 10 hours?

Back

1,200 presents.

Front

What is the perimeter of a square block if each side is 25m long?

Back

The perimeter is the total distance around the block. For a square, add all four sides: 25m + 25m + 25m + 25m = 100m.

Front

How do you divide cookies among groups?

Back

To divide cookies among groups, you can use division. For example, if you have 40 cookies and want to share them with 3 groups, you divide 40 by 3.

Front

If Ms. Bennett baked 40 cookies and gave 4 to her dog, how many cookies are left to share?

Back

There are 36 cookies left to share (40 - 4 = 36).

Front

What is the total distance walked if each side of the block is 25m and there are 4 sides?

Back

The total distance is 100m (25m x 4 = 100m).