Adding and Subtracting Fractions

This video tutorial covers adding fractions with sums greater than two, focusing on finding common denominators and using the least common multiple. It includes examples of adding whole numbers and fractions, as well as mixed numbers. The tutorial emphasizes the properties of addition and demonstrates how to rewrite addition problems to simplify calculations.

What is the main focus of the lesson in this video?

• Dividing fractions with sums greater than two

• Subtracting fractions with sums less than one

• Adding fractions with sums greater than two

• Multiplying fractions with whole numbers

What mathematical concept was reviewed from the last lesson?

• Finding the greatest common factor

• Finding a common denominator using the least common multiple

• Understanding decimal fractions

• Solving equations with variables

According to the properties of addition, what can be done to an addition problem?

• It can be solved only in one specific order

• It can be rewritten in a different order and still get the same answer

• It can only be solved using subtraction

• It must include multiplication to be solved

What is the first step in solving the addition problem according to the video?

• Multiply the fractions

• Add the fractions first

• Divide the whole numbers

• Solve the whole numbers first

What is the benefit of rewriting an addition problem in a different order?

• It makes the problem more complex

• It has no benefit

• It changes the final answer

• It simplifies the calculation process

What is the result of adding whole numbers before fractions in an addition problem?

• It simplifies the problem

• It makes the problem incorrect

• It complicates the problem

• It has no effect on the problem

In the first example, what is the common denominator found for 1/5 and 1/2?

• 20

• 15

• 10

• 5

What is the result of adding 2 + 1/5 + 1/2 in the first example?

• 3 and 1/10

• 3 and 1/2

• 3 and 1/5

• 3 and 7/10

What is the purpose of finding a common denominator when adding fractions?

• To make the fractions larger

• To simplify the fractions

• To ensure the fractions have the same denominator

• To convert fractions to decimals

In the second example, what is the common denominator for 5/7 and 2/3?

• 14

• 35

• 21

• 28