How to Multiply Fractions with Different Signs

This video tutorial explains how to multiply fractions with different signs. It begins by reviewing the concept of positive and negative signs in fractions. The tutorial outlines three rules for multiplying fractions based on their signs: if both fractions have the same sign, the product is positive; if they have different signs, the product is negative; and if one term is zero, the product is zero. The video provides examples, including multiplying two fractions with different signs and a more complex problem involving three fractions. It concludes with a demonstration of cross cancelling to simplify multiplication.

What is the result when multiplying two fractions with the same sign?

• The product depends on the values of the fractions.

• The product is always negative.

• The product is zero.

• The product is always positive.

If you multiply a positive fraction by a negative fraction, what will the sign of the product be?

• It depends on the fractions

• Zero

• Positive

• Negative

What is the product of 1/7 and -4/5?

• -1/35

• 1/35

• 4/35

• -4/35

When multiplying three fractions, how should you approach the problem?

• Convert fractions to decimals before multiplying.

• Add the fractions first, then multiply.

• Multiply two fractions at a time using parentheses.

• Multiply all three fractions at once.

What is the final product of multiplying -1/4, -1/2, and 4/5?

• 4/15

• 1/30

• -1/30

• -4/15