Adding and Subtracting Fractions

This video tutorial covers the addition and subtraction of fractions, focusing on finding common denominators using the least common multiple (LCM). It explains how to simplify fractions using the greatest common factor (GCF) and demonstrates the process of adding and subtracting fractions with different denominators. The tutorial also covers regrouping and handling mixed numbers, as well as advanced subtraction techniques for fractions greater than one. The lesson concludes with a preview of the next topic, which involves dividing fractions.

What is the first step in adding or subtracting fractions?

• Find the greatest common factor

• Find a common denominator

• Multiply the numerators

• Divide the denominators

How do you find the least common multiple of two numbers?

• By adding the numbers

• By finding the smallest number that both numbers divide into

• By multiplying the numbers

• By subtracting the smaller number from the larger

When adding fractions, what must be true about the denominators?

• They must be different

• They must be even numbers

• They must be the same

• They must be prime numbers

What is the simplified form of the fraction 6/8?

• 3/4

• 2/3

• 5/6

• 1/2

What is the least common multiple of 7 and 10?

• 10

• 77

• 70

• 17

In subtraction of fractions, what should you do if the numerator is smaller than the one being subtracted?

• Add the denominators

• Turn it into a fraction greater than one

• Multiply the numerators

• Subtract the denominators

What is the result of subtracting 1/4 from 7/12?

• 1/6

• 1/4

• 1/2

• 1/3

When adding mixed numbers, what should you do if the sum includes a fraction greater than one?

• Regroup to form a whole number

• Multiply the fraction

• Subtract the fraction

• Ignore the fraction

What is the least common multiple of 8 and 4?

• 16

• 4

• 8

• 12

What is the next topic after adding and subtracting fractions?

• Simplifying fractions

• Finding common denominators

• Dividing fractions

• Multiplying fractions