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First you multiply the whole number by the denominator then add the numerator to the product then put the answer over the denominator

Q: What is the general rule for writing a mixed number as an improper fraction?

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Yes.

To convert a mixed number to an improper fraction, multiply the denominator by the whole number, add that total to the numerator and put the whole thing over the original denominator.

Improper Fraction.

You do not do anything. An improper fraction IS a real number.

Some numbers are improper fractions and some are not. For example, 1/2 or 0.5 is a number but not an improper fraction. And there is no way in which you can express it as an improper fraction.

Related questions

As an improper fraction the numerator will be greater than the denominator or it will be a 'top heavy' fraction

Yes.

To convert a mixed number to an improper fraction, multiply the denominator by the whole number, add that total to the numerator and put the whole thing over the original denominator.

Improper Fraction.

You do not do anything. An improper fraction IS a real number.

Some numbers are improper fractions and some are not. For example, 1/2 or 0.5 is a number but not an improper fraction. And there is no way in which you can express it as an improper fraction.

If you are using the same number, then the improper fraction and mixed number are equal.

No, it is not an improper fraction. It is a whole number.

twelve eighths is already in improper fraction, an improper fraction is a fraction which has a numerator (top number) larger than the denominator (bottom number)

Convert the mixed number into an improper fraction then divide the fraction and improper fraction as normal (invert the divisor and multiply) and simplify the result (including converting any improper fraction into a mixed number)

An Improper Fraction is when the top number is bigger than the bottom number

First you would want to change the mixed number to an improper fraction. Then you can subtract