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Q: How can you tell whether the sum of two fractions with a common denominator is greater than one?

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You find the common denominator for both fractions and which ever has the highest numerator is greater.

When the numerator is less than the denominator then it is a common fraction but if the numerator is greater than the denominator then it is an improper fraction.

That Would be a Terminating Fraction i think.

You don't need a common denominator to divide fractions.

if you are adding two fractions that are both greater than 1/2, what must be true about the sum?

The least common denominator is the least common multiple of the denominators of the fractions.

Just multiply the two denominators of your fractions, the answer you get is a common denominator.

Convert the fractions to a common denominator, then compare.

By finding the lowest common denominator of the fractions.

If you mean the steps, they are as follows:* Identify a common denominator. Any common denominator will do. * Convert both fractions to equivalent fractions, with the common denominator found in the previous step. (If the fractions start off with the same denominator, there is nothing else to do in these first two steps.) * Add the numerators. That's the numerator of the result. Copy the common denominator as the denominator of the result. * Check whether you can simplify the resulting fraction.

If the sum of the numerators is greater than the denominator the sum is greater than 1. If the sum of the numerators is equal to the denominator the sum is equal to 1. If the sum of the numerators is less than the denominator the sum is less 1.

No only when adding or subtracting fractions a common denominator is needed

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