Adding and Subtracting Fractions: Key Concepts and Techniques

Miss Schneider teaches how to add, subtract, and decompose fractions with a common denominator. The lesson includes definitions of key terms like numerator and denominator, and provides visual aids and practice problems. A real-world problem involving a cupcake recipe is used to apply the concepts learned.

What do you add when you are adding fractions?

• None of the above

• Both numerators and denominators

• Numerators

• Denominators

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

What is the denominator in the fraction 5/6?

• 11

• 6

• 5

• 1

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What remains the same when adding or subtracting fractions?

• Numerator

• Denominator

• None

• Both

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you find the difference between two fractions?

• Multiply the numerators

• Subtract the numerators

• Subtract the denominators

• Add the numerators

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

What does decomposing a fraction mean?

• Multiplying fractions

• None of the above

• Splitting a fraction into smaller fractions

• Combining fractions into one

Tags

CCSS.4.NF.B.3B

If you decompose the fraction 4/6, which of the following is a correct decomposition?

• Both A and B

• 2/6 + 2/6

• 1/6 + 3/6

• None of the above

Tags

CCSS.4.NF.B.3B

How can you decompose the fraction 9/12?

• 3/12 + 3/12 + 3/12

• 4/12 + 5/12

• 6/12 + 3/12

• 9/12 + 0/12

Tags

CCSS.4.NF.B.3B

What is the result of adding 2/5 + 2/5?

• 2/10

• 4/5

• 4/10

• 2/5

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

If you subtract 2/10 from 8/10, what fraction do you get?

• 6/10

• 10/8

• 10/10

• 6/8

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

What does 'quadruple' mean in terms of multiplication?

• Multiply by 5

• Multiply by 2

• Multiply by 3

• Multiply by 4

Tags

CCSS.5.OA.B.3