Converting Mixed Numbers and Fractions

In this video, Mr. J explains how to divide mixed numbers by fractions using two examples. The process involves converting mixed numbers to improper fractions, applying the keep-switch-flip method, and simplifying the result. The video also covers the cancellation method to simplify calculations before multiplying. The first example involves dividing five and a half by five-sixths, while the second example covers two and four-ninths divided by two-thirds. Mr. J concludes by summarizing the steps and emphasizing the importance of simplification.

What is the first step in dividing mixed numbers by fractions?

• Subtract the fractions

• Add the fractions

• Multiply the fractions directly

• Convert mixed numbers to improper fractions

How do you convert a mixed number to an improper fraction?

• Add the numerator and denominator

• Subtract the numerator from the denominator

• Multiply the whole number by the denominator and add the numerator

• Divide the numerator by the denominator

Tags

CCSS.7.NS.A.2C

What does the 'Keep, Switch, Flip' method involve?

• Keeping the first fraction, switching the operation to subtraction, and flipping the second fraction

• Keeping the first fraction, switching the operation to addition, and flipping the second fraction

• Keeping the first fraction, switching the operation to multiplication, and flipping the second fraction

• Keeping the first fraction, switching the operation to division, and flipping the second fraction

Tags

CCSS.5.NF.B.6

Why is cancellation used before multiplying fractions?

• To convert the fractions to mixed numbers

• To change the operation to addition

• To simplify the problem and make the numbers easier to work with

• To make the numbers larger

What is the greatest common factor used for in cancellation?

• To add the fractions

• To find a common denominator

• To divide both the numerator and denominator by the same number

• To multiply the fractions

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

In the second example, what is the first step after converting the mixed number?

• Add the fractions

• Subtract the fractions

• Use the 'Keep, Switch, Flip' method

• Multiply the fractions directly

Tags

CCSS.6.NS.A.1

What is the result of dividing two and four ninths by two thirds?

• Three and two thirds

• Four and one third

• Two and one third

• Three and one half

How do you determine the whole number part of a mixed number from an improper fraction?

• By adding the numerator and denominator

• By dividing the numerator by the denominator

• By multiplying the numerator and denominator

• By subtracting the numerator from the denominator

What is the remainder used for when converting an improper fraction to a mixed number?

• As the new denominator

• As the whole number part

• As the numerator of the fractional part

• As the divisor

What is the final step in solving a division problem involving mixed numbers and fractions?

• Convert the result to an improper fraction

• Simplify the fractional part of the mixed number

• Multiply the fractions again

• Add the fractions