Adding and Subtracting Fractions with Negatives Explained

This video tutorial covers adding and subtracting fractions with negative numbers. It provides tips on converting mixed numbers to improper fractions, finding common denominators, and using a scoreboard method to solve problems. The tutorial includes six examples, each demonstrating different scenarios involving negative fractions, mixed numbers, and whole numbers. The video emphasizes simplifying fractions and understanding the impact of negative signs in calculations.

What is the first step in adding fractions with different denominators?

• Multiply the denominators

• Find a common denominator

• Add the numerators directly

• Subtract the numerators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• Subtract the numerator from the whole number

• Add the numerator to the whole number

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

• Divide the whole number by the denominator

What method is used to combine numerators when adding fractions?

• Direct addition

• Scoreboard method

• Equivalent fraction method

• Cross-multiplication

Tags

CCSS.7.NS.A.1C

What happens to the denominator when adding or subtracting fractions?

• It remains the same

• It is summed with the numerator

• It is discarded

• It is multiplied by two

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you handle a negative sign in a fraction during addition?

• Ignore the sign

• Convert the fraction to a positive

• Add it to the numerator

• Place it on the negative side of the scoreboard

Tags

CCSS.7.NS.A.1C

What is the least common denominator of 4 and 6?

• 12

• 20

• 10

• 24

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

• 0

• The same as the numerator

• 1

• 2

What is the result of subtracting 5/3 from -5?

• -20/3

• 20/3

• -10/3

• 10/3

Tags

CCSS.7.NS.A.1C

How do you simplify the fraction -55/12?

• Divide by the greatest common divisor

• Leave as is

• Multiply numerator and denominator by -1

• Convert to a mixed number

What is the correct way to handle double negatives in fraction subtraction?

• Subtract as usual

• Change to addition

• Ignore both negatives

• Convert both to positives

Tags

CCSS.7.NS.A.1C