Subtracting Positive and Negative Fractions and Mixed Numbers

The video tutorial explains how to subtract positive and negative fractions and mixed numbers. It covers integer rules, finding common denominators, and converting improper fractions to mixed numbers. The tutorial provides examples with different scenarios, such as subtracting fractions with mixed signs, different denominators, and mixed numbers. It also discusses borrowing in subtraction and simplifying results.

What is the first step when subtracting fractions and mixed numbers?

• Convert to improper fractions

• Add the opposite of the second number

• Find the common denominators

• Subtract the numerators

Tags

CCSS.7.NS.A.1C

When subtracting fractions, what should you do if the denominators are different?

• Find the least common multiple of the denominators

• Add the numerators directly

• Ignore the denominators

• Subtract the denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

In Example 1, what is the common denominator used for -2/3 and -3/4?

• 6

• 9

• 12

• 15

Tags

CCSS.7.NS.A.1C

What is the result of -2/3 - 3/4 after converting to a mixed number?

• -1 and 7/12

• -1 and 1/12

• -1 and 9/12

• -1 and 5/12

Tags

CCSS.7.NS.A.1C

In Example 2, what is the final sign of the result when subtracting -1/2 and -3/4?

• Undefined

• Zero

• Negative

• Positive

Tags

CCSS.7.NS.A.1C

What is the common denominator used for -1/2 and -3/4 in Example 2?

• 4

• 8

• 2

• 6

In Example 3, what is the common denominator used for 4/9 and 11/12?

• 24

• 18

• 36

• 27

What is the final result of 4/9 - 11/12?

• -23/36

• -21/36

• -19/36

• -17/36

Tags

CCSS.7.NS.A.1C

In Example 4, what is the common denominator used for 1/2 and 5/9?

• 18

• 15

• 12

• 9

What is the simplified form of the final answer in Example 6?

• -21 and 2/3

• -21 and 1/2

• -21 and 3/4

• -21 and 4/5

Tags

CCSS.7.NS.A.1D