- Add the numerators together.
- Keep the common denominator.
- Simplify the resulting fraction, if necessary.

- Find the least common denominator (LCD).
- Rewrite each fraction with the LCD.
- Add the numerators together.
- Keep the common denominator.
- Simplify the resulting fraction, if necessary.

- Subtract the numerators.
- Keep the common denominator.
- Simplify the resulting fraction, if necessary.

- Find the least common denominator (LCD).
- Rewrite each fraction with the LCD.
- Subtract the numerators.
- Keep the common denominator.
- Simplify the resulting fraction, if necessary.

- Understand the concept of fractions and how to find equivalent fractions.
- Practice finding the least common denominator (LCD) for pairs of fractions.
- Practice adding and subtracting fractions with the same and different denominators.
- Learn to simplify fractions to their lowest terms.
- Apply the concept to real-life problems such as cooking recipes, measurements, and sharing quantities.

Study GuideAdd/Subtract Fractions Worksheet/Answer key

Add/Subtract Fractions Worksheet/Answer key

Add/Subtract Fractions Worksheet/Answer key

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Number and Operations (NCTM)

Understand numbers, ways of representing numbers, relationships among numbers, and number systems.

Work flexibly with fractions, decimals, and percents to solve problems.

Understand meanings of operations and how they relate to one another.

Understand the meaning and effects of arithmetic operations with fractions, decimals, and integers.

Compute fluently and make reasonable estimates.

Select appropriate methods and tools for computing with fractions and decimals from among mental computation, estimation, calculators or computers, and paper and pencil, depending on the situation, and apply the selected methods.

Develop and analyze algorithms for computing with fractions, decimals, and integers and develop fluency in their use.