Adding and Subtracting Unlike Fractions and Mixed Numbers Using Number Line

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

• Find the greatest common factor of the denominators.

• Add or subtract the numberators

• Find the lowest common denominator (by finding the LCM of the denominators)

• Add or Subtract the denominators

What is the result of subtracting 5/6 from 1?

• 3/4

• 5/6

• 1/6

• 2/3

What is the sum of 2/3 and 3/4? Choose the BEST answer.

• 17/12

• 4/5

• 1 5/12

• 5/7

What is the first step when adding and subtracting fractions?

• Multiply the numerators

• Divide the denominators

• Find a common denominator

• Find the greatest common factor

Add the fraction 4/9 separately to each fraction in the choices below. Determine whether or not the sum would lie between 0 and 1 on a number line. Select the answer choices that would create a sum that is between 0 and 1 on a number line.

• 1/8

• 2/3

• 2/5

• 4/5

• 17/18

• 11/10

• 4/10

• 1 1/10

• 4/7

• 3/10

• 5/10

• 5/7

• 13/10

What is the sum of these fractions in lowest terms?

• 4/5

• 3/20

• 17/20

• 4/20

• 4/7

• 13/12

• 1 1/12

• 4/12

After finding the common denominator and renaming the fractions with equivalent fractions, when adding or subtracting mixed numbers what do you do?

• Divide the numerators and denominators

• Multiply the numerators and denominators

• Change the common denominator

• Add or subtract the fractions first BEFORE the whole numbers