Multiplying Fractions and Mixed Numbers

Mr. Nerlich introduces lesson 4.1 on multiplying fractions, explaining the importance of simplifying results. He demonstrates two methods: using the greatest common factor (GCF) and cross-canceling. The lesson covers multiplying fractions, whole numbers, and mixed numbers, emphasizing the MAD method for mixed numbers. The video concludes with encouragement for students to practice these skills.

What is the first step when multiplying fractions?

• Add the numerators

• Multiply the numerators

• Subtract the denominators

• Divide the numerators

Why is it important to simplify fractions?

• To make the fraction larger

• To avoid using fractions

• To make calculations easier

• To use fewer measuring tools

What is one method to simplify fractions?

• Multiplying by 2

• Subtracting the denominators

• Using the GCF

• Adding the numerators

What does GCF stand for?

• Greatest Common Function

• Greatest Common Form

• Greatest Common Fraction

• Greatest Common Factor

In the example 3/4 * 8/5, what is the simplified form using GCF?

• 24/20

• 6/5

• 1 1/5

• 3/2

What is the first step when multiplying a fraction by a whole number?

• Add the whole number to the fraction

• Convert the whole number to a fraction

• Multiply the whole number by 2

• Subtract the whole number from the fraction

How do you convert a whole number to a fraction?

• Subtract 1 from the whole number

• Place the whole number over 1

• Multiply the whole number by 2

• Add 1 to the whole number

What is the result of multiplying 1/7 by 14?

• 2

• 1/14

• 7

• 14/7

What does the MAD method stand for when dealing with mixed numbers?

• Multiply, Add, Decimal

• Multiply, Add, Denominator

• Multiply, Add, Divide

• Multiply, Add, Difference

How do you convert 2 3/4 to an improper fraction using the MAD method?

• 11/4

• 7/4

• 8/3

• 9/4