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Subtracting Fractions with Unlike DenominatorsFREEWorksheet Generator(Grade 5)

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📄 Sheet #1•10 Problems

PanMaths.comSubtracting Fractions with Unlike Denominators Worksheet Generator • Worksheet #1

Name: __________________________

Date: _____________ Period: ____

Score: _____ / 10

26−14= ______

Workspace:

45−24= ______

Workspace:

46−37= ______

Workspace:

22−12= ______

Workspace:

45−25= ______

Workspace:

23−13= ______

Workspace:

910−16= ______

Workspace:

39−29= ______

Workspace:

69−28= ______

Workspace:

10.

35−27= ______

Workspace:

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PanMaths.comAnswer Key & Worked Solutions • Worksheet #1

Answer Key

Total Problems: 10

26−14= 1/12

1. Find Least Common Denominator (LCD) of 6 and 4: LCD = 12

2. Convert to Equivalent Fractions: 2/6 = 4/12 and 1/4 = 3/12

3. Subtract Numerators: (4 − 3) / 12 = 1/12

45−24= 3/10

1. Find Least Common Denominator (LCD) of 5 and 4: LCD = 20

2. Convert to Equivalent Fractions: 4/5 = 16/20 and 2/4 = 10/20

3. Subtract Numerators: (16 − 10) / 20 = 6/20

4. Simplify to Lowest Terms: 3/10

46−37= 5/21

1. Find Least Common Denominator (LCD) of 6 and 7: LCD = 42

2. Convert to Equivalent Fractions: 4/6 = 28/42 and 3/7 = 18/42

3. Subtract Numerators: (28 − 18) / 42 = 10/42

4. Simplify to Lowest Terms: 5/21

22−12= 1/2

1. Like Denominators: Keep denominator 2

2. Subtract Numerators: 2 − 1 = 1 → 1/2

45−25= 2/5

1. Like Denominators: Keep denominator 5

2. Subtract Numerators: 4 − 2 = 2 → 2/5

23−13= 1/3

1. Like Denominators: Keep denominator 3

2. Subtract Numerators: 2 − 1 = 1 → 1/3

910−16= 11/15

1. Find Least Common Denominator (LCD) of 10 and 6: LCD = 30

2. Convert to Equivalent Fractions: 9/10 = 27/30 and 1/6 = 5/30

3. Subtract Numerators: (27 − 5) / 30 = 22/30

4. Simplify to Lowest Terms: 11/15

39−29= 1/9

1. Like Denominators: Keep denominator 9

2. Subtract Numerators: 3 − 2 = 1 → 1/9

69−28= 5/12

1. Find Least Common Denominator (LCD) of 9 and 8: LCD = 72

2. Convert to Equivalent Fractions: 6/9 = 48/72 and 2/8 = 18/72

3. Subtract Numerators: (48 − 18) / 72 = 30/72

4. Simplify to Lowest Terms: 5/12

10.

35−27= 11/35

1. Find Least Common Denominator (LCD) of 5 and 7: LCD = 35

2. Convert to Equivalent Fractions: 3/5 = 21/35 and 2/7 = 10/35

3. Subtract Numerators: (21 − 10) / 35 = 11/35

PanMaths.com • Answer Key & Worked SolutionsPage 2 of 2

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Worksheet Info

Categoryfractions

Grade LevelGrade 5

DifficultyIntermediate (Unlike Denominators LCD up to 24)

Time15-20 min

CCSS CodeCCSS.MATH.CONTENT.5.NF.A.1

Skills Practiced

✓ Finding Least Common Denominator (LCD)
✓ Converting to equivalent fractions
✓ Multi-step numerator subtraction
✓ Simplifying fractions to lowest terms

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📜 Standard: CCSS.MATH.CONTENT.5.NF.A.1

Mastering Subtracting Fractions with Unlike Denominators: Core Concepts & Mental Models

Subtracting Fractions with Unlike Denominators worksheets with step-by-step answer keys. Generate unlimited unique practice sheets for Grade 5.

⚠️ Common Mistakes & Teacher Fixes

⚠️Subtracting Numerators and Denominators Directly (e.g. 3/4 − 1/2 = 2/2 = 1)

Why students stumble: Students skip finding a common denominator, treating numerators and denominators as independent whole numbers.

Teacher Fix: Fractions cannot be subtracted until unit slice sizes match. Convert 1/2 to 2/4 first, then calculate 3/4 − 2/4 = 1/4.

Example: Incorrect: 5/6 − 1/3 = 4/3. Correct: 5/6 − 2/6 = 3/6 = 1/2.

⚠️Using a Common Multiple That Is Too Large

Why students stumble: Students multiply denominators together (e.g., 4 × 6 = 24) instead of finding the smaller LCD (12), leading to arithmetic mistakes during simplification.

Teacher Fix: List multiples of the larger denominator to find the smallest number both divide evenly into: multiples of 6 are 6, 12... 4 divides 12, so LCD is 12.

Example: For denominators 4 and 6, use LCD 12 rather than 24.

❓ Frequently Asked Questions

What is the core learning objective for subtracting fractions with unlike denominators?

Subtracting Fractions with Unlike Denominators worksheets with step-by-step answer keys. Generate unlimited unique practice sheets for Grade 5. This directly aligns with Common Core Standard CCSS.MATH.CONTENT.5.NF.A.1.

What is the most common mistake students make with subtracting fractions with unlike denominators?

A frequent pitfall is: "Subtracting Numerators and Denominators Directly (e.g. 3/4 − 1/2 = 2/2 = 1)". Why students stumble: Students skip finding a common denominator, treating numerators and denominators as independent whole numbers. How to fix it: Fractions cannot be subtracted until unit slice sizes match. Convert 1/2 to 2/4 first, then calculate 3/4 − 2/4 = 1/4. (Example: Incorrect: 5/6 − 1/3 = 4/3. Correct: 5/6 − 2/6 = 3/6 = 1/2.)

How does the unlimited subtracting fractions with unlike denominators worksheet generator work?

Every click of 'Generate New Worksheet' creates a completely fresh set of subtracting fractions with unlike denominators problems with unique numbers. No two worksheets are ever the same — perfect for daily practice, homework variety, and preventing student copying. You can also customize the problem count (6, 8, 10, 12, 15, or 20 problems per sheet).

Are these subtracting fractions with unlike denominators worksheets free to print with answer keys?

Yes! Every single worksheet on PanMaths is 100% free with no sign-up needed. Each sheet includes a dedicated Answer Key on Page 2 with step-by-step intermediate evaluation lines for 1-minute grading.