Equivalent Fractions and Subtraction

This video tutorial explains two methods for subtracting fractions with unlike denominators. The first method involves listing common multiples to find a common denominator, demonstrated with examples of subtracting 3/6 and 1/4, and 6/9 and 2/6. The second method uses multiplication of denominators to find a common denominator, again illustrated with the same examples. The video emphasizes the importance of choosing the lowest common multiple for simplicity.

What is the first step in subtracting fractions with unlike denominators?

• List out common multiples

• Add the fractions

• Find a common numerator

• Multiply the numerators

Why can't you subtract fractions with different denominators directly?

• Because the fractions are mixed numbers

• Because the fractions are improper

• Because the denominators are different

• Because the numerators are different

What is the common multiple of 6 and 4 used in the example?

• 18

• 24

• 12

• 6

What is the equivalent fraction of 1/4 with a denominator of 12?

• 1/12

• 4/12

• 6/12

• 3/12

What is the result of subtracting 6/12 from 3/12?

• 0/12

• 2/12

• 3/12

• 1/12

What is the common multiple of 6 and 9 used in the second example?

• 18

• 36

• 54

• 12

What is the equivalent fraction of 2/6 with a denominator of 18?

• 4/18

• 3/18

• 9/18

• 6/18

What is the result of subtracting 12/18 from 6/18?

• 6/18

• 0/18

• 3/18

• 2/18

What is the second method for finding a common denominator?

• Subtracting the numerators

• Multiplying the denominators

• Adding the numerators

• Dividing the denominators

What is the common denominator when multiplying 6 and 4?

• 18

• 24

• 36

• 12