Equivalent Fraction Dominoes: Lowest Terms, Common Denominators, Sums of One
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Hi and Welcome to Math Antics. In the last video we learned how easy it is to add and subtract fractions that have the same bottom number. We call those ‘like’ fractions. But often you’ll be asked to add or subtract fractions that have different bottom numbers, or ‘unlike’ fractions. And we learned that the only way we can do that is to change our fractions so that they DO have the same bottom number. Alright then… how do we do that? How can we change two ‘unlike’ fractions into two ‘like’ fractions? How do we get our fractions to have a ‘common denominator’? The answer is, we need to use equivalent fractions! You remember what equivalent fractions are, right? They’re fractions that have the same value, but use different top and bottom numbers: like 1 over 2 and 2 over 4. They both represent one half, but with different numbers. Well, whenever we have two unlike fractions that we need t
