Quiz on Adding and Subtracting Mixed Numbers

What is the first step in adding mixed numbers by converting them into improper fractions?

• Multiply the whole number by the denominator.

• Add the numerators directly.

• Subtract the smaller fraction from the larger one.

• Find a common denominator first.

When converting a mixed number to an improper fraction, what happens to the denominator?

• It is added to the numerator.

• It remains the same.

• It is multiplied by the whole number.

• It becomes the numerator.

In Example 2, what is the least common multiple of the denominators 3 and 4?

• 9

• 15

• 12

• 6

What is the main advantage of the second method of adding and subtracting mixed numbers?

• It avoids finding common denominators.

• It requires less multiplication.

• It is more accurate.

• It uses smaller numbers.

In Example 3, what is the least common multiple of 6 and 8?

• 18

• 30

• 24

• 12

In Example 4, why is borrowing necessary when subtracting fractions?

• To avoid negative numbers.

• To change the denominators.

• To make the fractions equal.

• To simplify the fractions.

What is the result of borrowing a whole number in Example 4?

• The whole number decreases by one.

• The fraction becomes a mixed number.

• The fraction becomes improper.

• The denominator changes.

In Example 5, what is the least common multiple of 9 and 3?

• 6

• 15

• 12

• 9

What is the final step in converting an improper fraction to a mixed number?

• Divide the numerator by the denominator.

• Add the numerator to the whole number.

• Multiply the whole number by the denominator.

• Subtract the denominator from the numerator.

In Example 6, what is the result of converting 4 and 1/4 to an improper fraction?

• 18/4

• 15/4

• 16/4

• 17/4