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Adding and Subtracting Fractions

Adding and Subtracting Fractions. Example #1. When adding and subtracting fractions, we need a common denominator. Once the fractions have a common denominator, you will add or subtract the numerators and keep the denominators the same. Example #2. Find common denominators.

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Adding and Subtracting Fractions

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  1. Adding and Subtracting Fractions

  2. Example #1 When adding and subtracting fractions, we need a common denominator. Once thefractions have a common denominator, you will add or subtract the numerators and keep the denominators the same.

  3. Example #2 Find common denominators. Add the numerators. Keep the denominator.

  4. Example #3 Find common denominators. Add the numerators. Keep the denominator. Simplify.

  5. Example #4 Find common denominators. Subtract the numerators. Keep the denominator.

  6. Example #5 Find common denominators. Subtract the numerators. Keep the denominator. Simplify.

  7. Example #6 Find common denominators. Subtract the numerators. Keep the denominator. Simplify.

  8. Example #7 Felicia is making cookies for her brother’s birthday party. Her recipe calls for ¾ cups of brown sugar. She only has ⅓ cup left in the bag. How much brown sugar will she need to borrow from her neighbor to make the cookies? Felicia needs to borrow cups of brown sugar.

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