Adding Fractions with Unlike Denominators

If you have fractions with denominators 3 and 4, what is the least common multiple (LCM) of 3 and 4?

• 7

• 10

• 15

• 12

Tags

CCSS.4.OA.B.4

When adding fractions with unlike denominators, what should you do to make the denominators the same?

• Divide the denominators by their greatest common factor

• Find the least common multiple (LCM) of the denominators and rewrite each fraction with the LCM as the new denominator.

• Subtract the numerators and keep the denominators the same

• Multiply the numerators and denominators together

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

If you have 1/3 and 1/4, what is the common denominator you should use to add them?

• 7

• 15

• 12

• 10

Tags

CCSS.4.NF.A.2

After finding the common denominator, what should you do with the numerators of the fractions?

• Divide the numerators

• Multiply the numerators

• Perform the operation (addition or subtraction) on the numerators after finding the common denominator.

• Ignore the numerators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

If you have 2/5 and 3/7, what is the common denominator you should use to add them?

• 35

• 25

• 42

• 49

Tags

CCSS.4.NF.A.2

When adding fractions with unlike denominators, should you change the numerators or denominators to make them the same?

• Change the denominators

• Change the numerators

• Multiply the fractions

• Change both numerators and denominators

Tags

CCSS.7.NS.A.1C

What is the final step in adding fractions with unlike denominators?

• Find the least common denominator

• Add the numerators

• Multiply the denominators

• Simplify if needed

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

If you have 1/2 and 1/3, what is the sum of these two fractions?

• 5/6

• 3/7

• 2/5

• 1/4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Simplify the fraction 5/10 after adding 1/2 and 1/5.

• 7/5

• 2/5

• 6/5

• 3/5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How do you simplify the fraction 8/12 to its lowest terms?

• 2/3

• 4/6

• 1/2

• 3/4

Tags

CCSS.4.NF.A.1

CCSS.4.NF.A.2

CCSS.4.OA.B.4