Adding and Subtracting Fractions with Like Denominators

This video tutorial teaches how to add and subtract fractions with like denominators. It explains that the process involves adding or subtracting the numerators while keeping the denominator constant. The tutorial uses examples with pizza and oranges to illustrate these concepts, emphasizing that the denominator represents the total number of pieces in a whole, which does not change during addition or subtraction.

What remains unchanged when adding or subtracting fractions with like denominators?

• The denominator

• None of the above

• Both numerator and denominator

• The numerator

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Why do we not change the denominator when adding or subtracting fractions?

• Because it changes the value of the fraction

• Because it is easier to calculate

• Because it represents the total number of pieces in the whole

• Because it makes the fraction simpler

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

If you have 2/6 of a pizza and your friend has 1/6, how much pizza do you have together?

• 3/6

• 4/6

• 2/6

• 1/6

Tags

CCSS.4.NF.B.3A

How do you find the total amount of pizza eaten if different amounts are eaten at different times?

• Add the denominators

• Subtract the numerators

• None of the above

• Add the numerators

Tags

CCSS.4.NF.B.3A

What does the numerator tell us when adding fractions?

• The number of pieces added

• The value of the whole

• The size of each piece

• The total number of pieces

Tags

CCSS.4.NF.B.3A

What is the result of subtracting 1/6 from 2/6 of a pizza?

• None of the above

• 1/6

• 3/6

• 2/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How much more pizza did you eat than your friend if you ate 2/6 and they ate 1/6?

• 2/6

• 3/6

• None of the above

• 1/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the correct way to subtract fractions with like denominators?

• Add the numerators

• Multiply the denominators

• Subtract both numerators and denominators

• Subtract numerators and keep the denominator the same

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

If Michaela ate 7/12 of an orange before lunch and 4/12 after, how much did she eat in total?

• 7/12

• 3/12

• 4/12

• 11/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

After eating parts of her orange at different times, how much of her orange did Michaela have left?

• 2/12

• None of the above

• 1/12

• 1/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2