When adding or subtracting fractions, it's important to make sure the denominators (the bottom numbers) are the same. If they are not the same, you need to find a common denominator before performing the operation. Here are the steps to add or subtract fractions:

Step 1: If the fractions have different denominators, find the least common denominator (LCD).

Step 2: Once you have the LCD, rewrite each fraction so that they have the same denominator.

Step 3: Add the numerators (the top numbers) together and keep the denominator the same.

Step 4: Simplify the fraction, if necessary.

Step 1: If the fractions have different denominators, find the least common denominator (LCD).

Step 2: Once you have the LCD, rewrite each fraction so that they have the same denominator.

Step 3: Subtract the numerators (the top numbers) and keep the denominator the same.

Step 4: Simplify the fraction, if necessary.

Here are some key points to remember when adding or subtracting fractions:

- Always make sure the denominators are the same before adding or subtracting.
- To find the LCD, identify the least common multiple of the denominators.
- When adding, simply add the numerators and keep the denominator the same.
- When subtracting, subtract the numerators and keep the denominator the same.
- Always simplify the resulting fraction, if possible, by finding the greatest common factor of the numerator and denominator.

Practice solving addition and subtraction problems with fractions to reinforce your understanding of the concept.

.Study GuideAdd/Subtract Fractions Activity LessonAdding & Subtracting Fractions Worksheet/Answer key

Add/Subtract Fractions Worksheet/Answer key

Add/Subtract Fractions Worksheet/Answer key

Add/Subtract Fractions Worksheet/Answer keyAdding and Subtracting Fractions

Number and Operations (NCTM)

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

Develop understanding of fractions as parts of unit wholes, as parts of a collection, as locations on number lines, and as divisions of whole numbers.

Compute fluently and make reasonable estimates.

Use visual models, benchmarks, and equivalent forms to add and subtract commonly used fractions and decimals.

Algebra (NCTM)

Use mathematical models to represent and understand quantitative relationships.

Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.