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Adding Fractions: First, check to make sure that the denominator (the number on the bottom) of both fractions is the same. If it is, then add together the numerator (the number on top) of each fraction but do not change the denominator.

Ask by Ruiz Long. in the United States
Mar 14,2025

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To add fractions with the same denominator, add the numerators and keep the denominator the same.

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Bonus Knowledge

Did you know that the practice of adding fractions dates back to ancient Egypt? Around 2000 BC, Egyptians used fractions primarily for measurement, dividing food and resources among workers. Their system included unit fractions, which are fractions with a numerator of one, paving the way for the fraction complexities we handle today! When adding fractions with different denominators, the biggest mistake is ignoring the need to find a common denominator. A common strategy is to use the least common multiple (LCM) of the denominators. Always check your work by ensuring both fractions are expressed in terms of their new common denominator before you go ahead and add those pesky numerators!

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