Mixed Numbers: Addition and Subtraction

This video tutorial covers how to add and subtract mixed numbers using two methods: working directly with mixed numbers and converting them to improper fractions. It explains the process of finding a common denominator, simplifying fractions, and converting between mixed and improper fractions. The tutorial also highlights the importance of ensuring fractions are in their simplest form and proper format. Both addition and subtraction are demonstrated with examples, emphasizing the pros and cons of each method.

What are the two methods discussed for adding and subtracting mixed numbers?

• Using improper fractions and converting to decimals

• Using mixed numbers and converting to decimals

• Using mixed numbers and converting to improper fractions

• Using decimals and converting to percentages

What is the least common denominator of 1/5 and 2/3?

• 10

• 15

• 20

• 25

If a fraction is improper, what should be done to express it correctly?

• Convert it to a whole number

• Convert it to a percentage

• Convert it to a mixed number

• Convert it to a decimal

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

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

• Subtract the numerator from the whole number

• Add the whole number to the numerator

• Multiply the numerator by the denominator

Tags

CCSS.7.NS.A.1C

What is the result of adding 6/5 and 8/3 after finding a common denominator?

• 58/15

• 50/15

• 60/15

• 24/15

Tags

CCSS.7.NS.A.1C

What is the first step in subtracting mixed numbers?

• Find a common denominator

• Convert to percentages

• Find a common numerator

• Convert to decimals

Tags

CCSS.7.NS.A.1C

When subtracting mixed numbers, what should you do if the fraction part of the minuend is smaller than the subtrahend?

• Perform an exchange with the whole number

• Add the fractions directly

• Ignore the fractions

• Convert to decimals

Tags

CCSS.7.NS.A.1C

What is the result of subtracting 138/30 from 55/30?

• 83/30

• 83/45

• 83/15

• 83/60

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

• Multiply the numerator by the denominator

• Divide the numerator by the denominator

• Add the numerator to the denominator

• Subtract the numerator from the denominator

Tags

CCSS.5.NF.B.3

What is the quotient when 83 is divided by 30?

• 2 and 23/30

• 2 and 13/30

• 3 and 23/30

• 3 and 13/30

Tags

CCSS.5.NF.B.3