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https://math.answers.com/math-and-arithmetic/Do_you_have_to_find_a_common_denominator_to_add_fractions

Do you have to find a common denominator to add fractions? - Answers

Not necessarily. For example, if you are asked "what is 1/2 + 1/5", you could answer it by saying "1/2 equals 0.5, and 1/5 = 0.2. Therefore, 1/2 + 1/5 = 0.5 + 0.2 = 0.7". If you want to keep them in the form of a fraction though, then yes, common denominators are required. One could in fact argue that this is exactly what you did when converting them to decimal. In that case, you gave them a common denominator of ten. If you look at it that way, then the answer is yes, a common denominator must be found.



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Do you have to find a common denominator to add fractions? - Answers

https://math.answers.com/math-and-arithmetic/Do_you_have_to_find_a_common_denominator_to_add_fractions

Not necessarily. For example, if you are asked "what is 1/2 + 1/5", you could answer it by saying "1/2 equals 0.5, and 1/5 = 0.2. Therefore, 1/2 + 1/5 = 0.5 + 0.2 = 0.7". If you want to keep them in the form of a fraction though, then yes, common denominators are required. One could in fact argue that this is exactly what you did when converting them to decimal. In that case, you gave them a common denominator of ten. If you look at it that way, then the answer is yes, a common denominator must be found.



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https://math.answers.com/math-and-arithmetic/Do_you_have_to_find_a_common_denominator_to_add_fractions

Do you have to find a common denominator to add fractions? - Answers

Not necessarily. For example, if you are asked "what is 1/2 + 1/5", you could answer it by saying "1/2 equals 0.5, and 1/5 = 0.2. Therefore, 1/2 + 1/5 = 0.5 + 0.2 = 0.7". If you want to keep them in the form of a fraction though, then yes, common denominators are required. One could in fact argue that this is exactly what you did when converting them to decimal. In that case, you gave them a common denominator of ten. If you look at it that way, then the answer is yes, a common denominator must be found.

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      Not necessarily. For example, if you are asked "what is 1/2 + 1/5", you could answer it by saying "1/2 equals 0.5, and 1/5 = 0.2. Therefore, 1/2 + 1/5 = 0.5 + 0.2 = 0.7". If you want to keep them in the form of a fraction though, then yes, common denominators are required. One could in fact argue that this is exactly what you did when converting them to decimal. In that case, you gave them a common denominator of ten. If you look at it that way, then the answer is yes, a common denominator must be found.

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