Subtracting Fractions with Different Denominators Quiz

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

• Find a common denominator

• Multiply the fractions

• Add the numerators directly

• Subtract the denominators

How do you find the least common multiple (LCM) of two denominators?

• By dividing the larger denominator by the smaller one

• By listing the multiples of each denominator until a common one is found

• By subtracting the smaller denominator from the larger one

• By adding the denominators

Once you have a common denominator, what should you do with the numerators?

• Keep them the same as the original fractions

• Multiply them by the same factor used to find the LCM

• Add them together

• Subtract them directly

What is the result of subtracting 30/45 from 27/45?

• 0/45

• 3/45

• 3/15

• 1/15

Why is it important to simplify the fraction after subtraction?

• To make the fraction larger

• To ensure the fraction is in its simplest form

• To change the fraction to a decimal

• To make the fraction easier to read