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If the denominator is more than double the numerator, then the fraction is less than a half.

Q: How could you use the relationship between the numerator and denominator of fractions equivalent to one half to determine if a fraction is less than one half?

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In fractions equivalent to 1/2, the numerator is half of the denominator. Any fraction where the numerator is less than half of the denominator, like 19/40, is less than 1/2. Any fraction where the numerator is more than half of the denominator, like 49/96, is greater than 1/2. That's also a quick way to compare fractions. 4/9 is less than 5/8.

That is how equivalent fractions are defined!

Divide the denominator into the numerator.

At least two fractions are needed in order to determine a common denominator.

You have to convert them to equivalent similar fractions (fractions with the same denominator) first.

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The denominator must be double the numerator.

No. Like fractions have the same denominator.

Convert them into equivalent fractions with the same denominator and then compare the numerators.

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You look for a common denominator; convert the fractions to equivalent fractions with the denominator you found; then you do the addition itself.

Divide the denominator into the numerator. If the answers are the same decimal, the fractions are equivalent.

In fractions equivalent to 1/2, the numerator is half of the denominator. Any fraction where the numerator is less than half of the denominator, like 19/40, is less than 1/2. Any fraction where the numerator is more than half of the denominator, like 49/96, is greater than 1/2. That's also a quick way to compare fractions. 4/9 is less than 5/8.

Fractions can only be added or subtracted if the denominators are the same. If the denominators are different, then the fractions need to be made into equivalent fractions with the same denominator. The new denominator can be found simply by multiplying the denominators together, but this can lead to some large fractions with which to work. A better new denominator is the lowest common multiple of (all the) denominators. (Once the new denominator is found, the fractions' new numerators are found by multiplying their current numerator by the new denominator divided by their current denominator to make their equivalent fractions with the new denominator.) Once all the fractions are converted into equivalent fractions with the new denominator then the fractions can be added or subtracted, with the result being simplified (if possible).

That is how equivalent fractions are defined!

Because to add or subtract two fractions you first have to find equivalent fractions for both which have the same denominator.

If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.

No, they are improper fractions. They can be equivalent to integers if the numerator is a multiple of the denominator.