Adding and Subtracting Positive and Negative Fractions

This video tutorial covers the process of adding and subtracting positive and negative fractions. It begins with an introduction to the concept and the importance of finding a common denominator. The tutorial then provides several examples, demonstrating how to handle fractions with different signs, subtract negative fractions, and simplify the results. Key integer rules are applied throughout the examples to ensure accurate calculations.

What is the first step in adding and subtracting positive and negative fractions?

• Find a common numerator

• Find a common denominator

• Change the signs of the fractions

• Simplify the fractions

Tags

CCSS.7.NS.A.1C

What must you do if you change the denominator of a fraction?

• Add the fractions

• Simplify the fraction

• Change the sign

• Change the numerator

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

In Example 1, what is the common denominator for the fractions 4 and 12?

• 16

• 12

• 8

• 4

What is the simplified form of -10/12?

• -1/2

• -3/4

• -5/6

• -2/3

In Example 2, what is the common denominator for the fractions 3 and 9?

• 12

• 6

• 3

• 9

What is the result of adding -6/9 and 4/9?

• 1/3

• -1/3

• 2/9

• -2/9

Tags

CCSS.7.NS.A.1C

In Example 3, what happens when you subtract a negative fraction?

• It becomes division

• It becomes subtraction

• It becomes addition

• It becomes multiplication

Tags

CCSS.7.NS.A.1C

What is the simplified form of 4/10 + 3/10?

• 1/2

• 7/10

• 2/5

• 3/5

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

In Example 4, what is the common denominator for the fractions 5 and 15?

• 5

• 20

• 10

• 15

What is the result of adding 6/15 and -13/15?

• 1/3

• -1/3

• 7/15

• -7/15

Tags

CCSS.7.NS.A.1C