Adding Same Denominator Unit Fractions

Add and simplify 4/7 and 3/7.

• 6/7

• 1

• 1 4/7

• 7/49

In the case that the given fractions are dissimilar, how shall we make them similar being the only way to proceed to addition or subtraction of fractions?

• Add the denominators together. Whatever is the sum, that will be the denominator for both fractions.

• Just choose either of the denominator from both fractions that you wanted as new denominator before you proceed to adding and subtracting the numerators.

• Simply find LCD and use such LCD as the new denominator for both fractions. Then find equivalent fractions for each given.

• All of the above.

7/8 - 7/12

• 7/24

• 1/4

• 7/12

• 4/24

Why is it important to have the same denominators when adding or subtracting unit fractions?

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What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

What is 3/4 + 1/4 = ?

Mathematical Equivalence

ON

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

To add or subtract unit fractions with the same denominator, simply combine the ________________ and keep the denominator the same.

Adding and subtracting unit fractions is a simple process. Just make sure the ________________ are the same, and then combine or subtract the numerators.

What is the result of adding 1/3 and 1/3?

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