Subtracting Mixed Numbers Quiz

What is the first step in subtracting mixed numbers?

• Add the whole numbers together

• Divide the fractions

• Multiply the fractions

• Set aside the whole numbers

Why do we need to find a common denominator when subtracting fractions?

• To simplify the fractions

• To make the fractions larger

• To ensure the fractions have the same base for subtraction

• To convert fractions into whole numbers

What is the least common multiple of 3 and 5?

• 10

• 15

• 20

• 25

How do you determine the new numerator for a fraction when renaming it with a common denominator?

• Subtract the old numerator from the denominator

• Multiply the old numerator by the factor used to get the new denominator

• Add the old numerator to the denominator

• Divide the old numerator by the factor used to get the new denominator

What is the new numerator for the fraction 2/3 when the common denominator is 15?

• 10

• 15

• 5

• 9

What is the new numerator for the fraction 3/5 when the common denominator is 15?

• 9

• 10

• 12

• 15

What is the result of subtracting the whole numbers 3 and 1?

• 1

• 2

• 3

• 4

What is the result of subtracting the fractions 10/15 and 9/15?

• 3/15

• 2/15

• 1/15

• 4/15

What is the final mixed number result of the subtraction problem?

• 1 1/15

• 2 2/15

• 3 1/15

• 2 1/15

What should you remember about the denominators when subtracting fractions?

• Add them

• Multiply them

• Subtract them

• Keep them the same