Dividing Fractions and Mixed Numbers Explained

This video tutorial covers the concept of reciprocals, explaining how two numbers multiply to one. It demonstrates finding reciprocals for fractions, whole numbers, and mixed numbers. The tutorial then transitions to dividing fractions and mixed numbers, providing step-by-step instructions and examples. The 'stay, switch, flip' method is introduced as a mnemonic for dividing fractions. The video concludes with practice problems for viewers to solve independently.

What is a reciprocal in the context of fractions?

• The sum of a fraction and its numerator

• A number that when multiplied by the fraction results in one

• The difference between a fraction's numerator and denominator

• A fraction that when added to another fraction equals zero

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the reciprocal of 3/4?

• 12/3

• 3/4

• 4/3

• 1/3

What is the result of multiplying the reciprocal of a number by the number itself?

• It cannot be determined

• 0

• The number itself

• 1

How do you find the reciprocal of a whole number?

• Multiply the number by itself

• Convert the number into a fraction over one and flip it

• Subtract the number from itself

• Divide the number by zero

How can you convert a mixed number into an improper fraction?

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

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

• Subtract the numerator from the whole number

• None of the above

When converting a whole number to a fraction for division, what should the denominator be?

• 10

• The same as the whole number

• 0

• 1

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

• Subtract the second fraction from the first

• Multiply by the reciprocal of the first fraction

• Convert them into improper fractions if necessary

• Add the fractions together

Tags

CCSS.6.NS.A.1

What does the 'stay, switch, flip' method involve?

• Keeping the first fraction, changing division to multiplication, and flipping the second fraction

• Staying with the same fractions and flipping both

• Flipping the first fraction, switching to addition, and multiplying the second fraction

• Switching the numerators of the fractions and then flipping

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CCSS.7.NS.A.2A

What should you do if you get a negative fraction as a result?

• Change it to a positive fraction

• Leave it as is if the calculation is correct

• None of the above

• Multiply by -1

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CCSS.7.NS.A.2A

In the 'stay, switch, flip' method, what do you do after switching the division sign to multiplication?

• Add the fractions

• Flip the second fraction

• Flip the first fraction

• Subtract the fractions

Tags

CCSS.6.NS.A.1