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Adding Fractions Assessment Worksheet

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Adding Fractions Assessment Worksheet

5th Grade Mathematics | Unit Test

Fractions illustration

📝 Part 1: Multiple Choice

Directions: Circle the letter of the best answer for each question.

1. What is the least common denominator (LCD) of 1/3 and 1/4?

A) 7

B) 8

C) 12

D) 16

2. What is 1/2 + 1/3?

A) 2/5

B) 2/6

C) 5/6

D) 3/5

3. Which of the following shows 2/5 + 1/3 with a common denominator?

A) 6/15 + 5/15

B) 4/10 + 2/10

C) 2/15 + 1/15

D) 6/8 + 5/8

4. What is 3/4 + 2/6 in simplest form?

A) 5/10

B) 13/12

C) 1 1/12

D) 5/12

5. Which answer is already in simplest form?

A) 4/8

B) 6/9

C) 7/10

D) 3/6

✏️ Part 2: Show Your Work

Directions: Solve each problem. Show all steps including finding the common denominator. Write your answer in simplest form.

6. Solve: 1/4 + 3/8 = _______
7. Solve: 2/3 + 1/6 = _______
8. Solve: 3/5 + 1/2 = _______
9. Explain in your own words: How do you find a common denominator when adding fractions with unlike denominators? Give an example.

🌟 Part 3: Word Problems

Directions: Read each problem carefully. Show your work and write your answer in a complete sentence.

10. Maya ran 2/3 of a mile before school and 3/4 of a mile after school. How far did she run in all? Write your answer in simplest form.

Answer: Maya ran _________ miles in all.

11. A recipe calls for 1/2 cup of sugar and 3/8 cup of brown sugar. How much sugar is needed in total? Write your answer in simplest form.

Answer: The recipe needs _________ cups of sugar in total.

12. Challenge: Jake spent 1/4 of his allowance on a snack and 2/5 of his allowance on a book. What fraction of his allowance did he spend in all? Did he spend more or less than half his allowance? Explain how you know.

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