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Adding and Subtracting Fractions

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Adding and Subtracting Fractions worksheet preview

Adding and Subtracting Fractions

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📚 Read and Learn

A fraction shows part of a whole. The bottom number is the denominator, which tells us how many equal parts make the whole. The top number is the numerator, which tells us how many parts we have.

When fractions have like denominators, add or subtract the numerators and keep the denominator the same. For example, 2/7 + 3/7 = 5/7.

When fractions have unlike denominators, first find a common denominator. For example, 1/2 + 1/4 can be changed to 2/4 + 1/4, which equals 3/4. Always simplify your answer when possible.

✏️ Part 1: Reading Check

1. What should you do when adding fractions with like denominators?

Add the denominators and keep the numerators

Add the numerators and keep the denominator

Multiply both denominators

Subtract the numerators

2. What is 2/7 + 3/7?

5/14

1/7

5/7

6/7

3. What is 1/2 + 1/4 after finding a common denominator?

1/6

2/4 + 1/4

1/8

3/8

🧮 Part 2: Calculate

Show your working. Write each answer in its simplest form.

4. 3/8 + 2/8 = _________
5. 7/10 − 3/10 = _________
6. 1/3 + 1/6 = _________
7. 5/6 − 1/4 = _________
8. Mia drank 1/2 litre of water in the morning and 1/4 litre in the afternoon. How much water did she drink altogether?

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