Best Answer

-1*(x/y) = -x/y

E.g.)

4/3 * -1 = -4/3

Q: What does multiplying a fraction by minus one mean?

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We call that cross multiplying.

When multiplying a fraction by a whole number you would rewrite it as a mixed number or convert the whole number to that number over one!

The numerator changes sign.

Yes. One method for dividing fractions is to multiply the numerator fraction by the reciprocal of the denominator fraction.

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We call that cross multiplying.

The same as a positive one. If you are multiplying a positive number by a negative, the answer will be negative. If you are multiplying a negative number by a negative, the answer will be positive.

When multiplying a fraction by a whole number you would rewrite it as a mixed number or convert the whole number to that number over one!

I think that it is one half?

Dividing by any fraction is the same as multiplying by that fraction's reciprocal. To find a fraction's reciprocal on a calculator, simply raise the fraction to the power of -1. In this case, dividing by 1/3 is the same as multiplying by (1/3)-1 = 3. For example, 8 / 1/3 = 8 x 3 = 24

1/2

The numerator changes sign.

It is: 3/4

1 fifth

Yes. One method for dividing fractions is to multiply the numerator fraction by the reciprocal of the denominator fraction.

If you are making just one multiplying fractions worksheet, I suggest going to multiplymath dot com. They have one off worksheets to use or you can create your own.

There are many sites available that offer worksheets for practice in multiplying fractions. Here is the address of one of them: www.math-aids.com/Fractions/Multiplying_Fractions.htm.