Video: Multiplying Fractions with Unlike Denominators

Complete the table below.


Video Transcript

Complete the table below.

In order to complete the table, we need to multiply four-fifths by negative one-sixth. In order to multiply two fractions, we firstly multiply the numerators, in this case four multiplied by negative one.

We then multiply the denominators, in this case five multiplied by six. Four multiplied by negative one is negative four. And five multiplied by six is equal to 30.

Therefore, four-fifths multiplied by negative one-sixth is equal to negative four thirtieths. We can simplify this fraction by dividing the top, the numerator, and the bottom, the denominator, by two. This is because two is a common factor of negative four and 30.

Negative four divided by two is negative two, and 30 divided by 2 is 15. This means that four-fifths multiplied by negative one-sixths is equal to negative two fifteenths, in its simplest form.

The missing number in the table was negative two fifteenths.

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