Common Denominators

It helps to add fractions easily.

It allows you to compare fractions accurately.

It makes fractions look the same.

It helps to multiply fractions.

A part of a whole

A whole number

A decimal

A percentage

It represents the number of parts we have

It is always greater than the denominator

It is the top number in a fraction

It represents the total number of parts

Greater, less, equal

Odd, even, prime

Positive, negative, zero

Whole, part, decimal

Because different sizes and shapes can change the value of fractions

Because it makes fractions easier to add

Because fractions with different shapes are always equal

Because fractions with different sizes are always greater

15

30

10

9

10/15

5/6

6/15

2/5

2/3 is greater than 3/5

3/5 is greater than 2/3

2/3 is equal to 3/5

Cannot be determined

The common denominator is 8. 2/3 becomes 16/24 and 3/5 becomes 14/24.

The common denominator is 15. 2/3 becomes 10/15 and 3/5 becomes 9/15.

The common denominator is 10. 2/3 becomes 20/30 and 3/5 becomes 18/30.

The common denominator is 5. 2/3 becomes 10/15 and 3/5 becomes 9/15.

Fractions must have the same denominator to be compared directly.

Multiplying both the numerator and denominator by the same number does not change the value of the fraction.

The fraction with the larger numerator is always greater when denominators are the same.

You can compare fractions without finding a common denominator.

To add fractions together

To subtract fractions

To compare fractions accurately

To simplify fractions