Common Core: 4th Grade Math : Understand Addition and Subtraction of Fractions: CCSS.Math.Content.4.NF.B.3a

Study concepts, example questions & explanations for Common Core: 4th Grade Math

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Example Questions

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Example Question #1 :Understand Addition And Subtraction Of Fractions: Ccss.Math.Content.4.Nf.B.3a

Select the fraction model that shows the sum of

Possible Answers:

3 4

2 4

2 6

3 6


2 3

Correct answer:


2 3

Explanation:

分数模型分成三部分and two of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #2 :Understand Addition And Subtraction Of Fractions: Ccss.Math.Content.4.Nf.B.3a

Select the fraction model that shows the sum of

Possible Answers:

3 4


2 3


2 4

2 6

3 6

Correct answer:


2 4

Explanation:

The fraction model is broken up into four pieces and two of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #1 :Understand Addition And Subtraction Of Fractions: Ccss.Math.Content.4.Nf.B.3a

Select the fraction model that shows the sum of

Possible Answers:

2 4

3 4

3 6

2 3

2 6

Correct answer:

3 4

Explanation:

The fraction model is broken up into four pieces and three of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #311 :Build Fractions From Unit Fractions

Select the fraction model that shows the sum of

Possible Answers:

2 8

2 4

2 3


2 6

3 4

Correct answer:


2 6

Explanation:

The fraction model is broken up into six pieces and two of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #1 :Understand Addition And Subtraction Of Fractions: Ccss.Math.Content.4.Nf.B.3a

Select the fraction model that shows the sum of

Possible Answers:


3 6

5 6

2 6

3 4

3 8

Correct answer:


3 6

Explanation:

The fraction model is broken up into six pieces and three of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #111 :How To Add Fractions

Select the fraction model that shows the sum of

Possible Answers:

4 6

2 6

3 6

4 8

5 8

Correct answer:

4 6

Explanation:

The fraction model is broken up into six pieces and four of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #314 :Build Fractions From Unit Fractions

Select the fraction model that shows the sum of

Possible Answers:

4 8

3 4

2 4

4 6

5 6

Correct answer:

4 6

Explanation:

The fraction model is broken up into six pieces and four of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #1 :Adding Fractions

Select the fraction model that shows the sum of

Possible Answers:

4 6

2 3

5 8


5 6

4 8

Correct answer:


5 6

Explanation:

The fraction model is broken up into six pieces and five of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #2 :Adding Fractions

Select the fraction model that shows the sum of

Possible Answers:

4 8

2 8

5 8


3 8

2 4

Correct answer:


3 8

Explanation:

The fraction model is broken up into eight pieces and three of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

Example Question #311 :Build Fractions From Unit Fractions

Select the fraction model that shows the sum of

Possible Answers:

5 8

4 6

3 4

3 6

4 8

Correct answer:

4 8

Explanation:

The fraction model is broken up into eight pieces and four of the pieces are shaded in. The numerator of the fraction tells us how many pieces should be shaded in, and the denominator tells us how many pieces the whole should be split up into.

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