Adding Subtracting Mixed Numbers Regrouping

A baker used 3 7/8 bars of chocolate to bake a cake and had 1 5/8 left over. Then she ate 4/8 of another bar. How many chocolate bars did she have at the start?

• 6 bars

• 5 7/8 bars

• 4 bars

• 5 4/8 bars

Mom had 5 2/6 yards of fabric. She cut off 3/6 yards for a quilt. She also cut 2 4/6 yards off the roll of fabric for another quilt. How much fabric did she have left?

• 4 5/6 yards

• 2 1/6 yards

• 2 yards

• 2 4/6 yards

Mrs. Vasquez bought 2 1/3 pounds of grapes and 1 2/3 pounds of bananas. How many total pounds of fruit did she buy?

• 5 pounds

• 4 pounds

• 2 1/3 pounds

• 1 2/3 pounds

When painting his bedroom George used 3 5/6 liters of blue paint and 2 4/6 liters of red paint. How much paint did he use altogether?

• 5 9/6 liters

• 6 1/2 liters

• 1 1/6 liters

• 5 1/6 liters

• 5 7/12
• 4 7/12
• 5 5/12
• 4 5/12

• 5 1/1 = 6
• 5 1/12
• 4 11/12
• 5 11/12

• 4  2/3
• 3  4/5
• 5  2/7
• 5  1/6

• 2  2/3
• 7  1/2
• 7
• 6

Add the mixed numbers vertically. Simplify if needed.

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator