Adding and Subtracting Mixed Numbers with Unlike Denominators Quiz

What is the first step when adding or subtracting mixed numbers with unlike denominators?

• Find the least common multiple

• Convert to improper fractions

• Add the numerators

• Subtract the denominators

Why is it important to find a common denominator when dealing with unlike denominators?

• To make the numerators equal

• To convert fractions to decimals

• To ensure the denominators are the same for addition or subtraction

• To simplify the fractions

Which method is used to find the common denominator in the five-step process?

• Least common multiple

• Cross multiplication

• Prime factorization

• Greatest common divisor

In the example problem, what is the least common multiple of 2 and 5?

• 20

• 15

• 10

• 5

After finding the common denominator, what is the next step in the process?

• Convert back to mixed numbers

• Multiply the fractions

• Add or subtract the numerators

• Reduce the fractions

What is the sum of the numerators 55 and 32 in the example problem?

• 107

• 97

• 77

• 87

When converting an improper fraction back to a mixed number, what becomes the whole number?

• The original numerator

• The quotient

• The remainder

• The original denominator

In the example, what is the final mixed number result of adding 5 1/2 and 3 1/5?

• 8 7/10

• 8 1/2

• 9 1/10

• 7 9/10

What should you do if the improper fraction can be reduced?

• Multiply by the denominator

• Always reduce it

• Convert it to a decimal

• Skip the reduction step

What is the key difference in step three when subtracting instead of adding?

• Subtract the numerators

• Subtract the denominators

• Add the denominators

• Multiply the numerators