Mastering Multiplying Fractions

This video tutorial by Miss Wetland is designed for seventh graders to learn about multiplying fractions, including positive and negative fractions. It covers the rules for multiplying integers, simplifying fractions, and introduces the cross-reducing technique to make calculations easier. The video also provides practice problems and assignment instructions to reinforce the concepts taught.

What happens when you multiply two negative fractions?

• The result is positive

• The result is undefined

• The result is zero

• The result is negative

If the signs of the fractions being multiplied are different, what will be the sign of the result?

• Negative

• Positive

• Undefined

• Zero

When multiplying fractions, what should you do after multiplying the numerators and denominators?

• Simplify the fraction

• Add the numerators

• Subtract the denominators

• Divide the numerators

What is the first step in simplifying a fraction?

• Add the denominators

• Find the greatest common factor

• Multiply the numerators

• Subtract the numerators

What is the benefit of simplifying fractions before multiplying them?

• It eliminates the need for further simplification

• It changes the signs of the fractions

• It makes the numbers larger

• It makes the numbers smaller and easier to work with

What does cross reducing allow you to do?

• Simplify fractions that are across from each other

• Add fractions together

• Subtract fractions from each other

• Multiply fractions without simplifying

Which property allows you to change the order of multiplication without changing the result?

• Associative Property

• Distributive Property

• Identity Property

• Commutative Property

What should you look for when cross reducing fractions?

• The smallest number

• The sum of the fractions

• Common factors between the numerator and denominator

• The largest number

What is the result of multiplying 1/2 and 3/5?

• 3/10

• 1/5

• 1/10

• 3/5

What should you do if you encounter a whole number while multiplying fractions?

• Convert it to a fraction by putting it over 1

• Ignore it

• Subtract it from the denominator

• Add it to the numerator