Free Grade 3 Subtracting Fractions Worksheets
Free Grade 3 worksheets for Subtracting Fractions: 12 real questions with a full answer key and worked solutions. Subtracting fractions works like adding: match the denominators, subtract the numerators, simplify.
Free
Core
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain subtracting fractions
Explain subtracting fractions accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate subtracting fractions
Calculate subtracting fractions accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare subtracting fractions
Compare subtracting fractions accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify subtracting fractions
Justify subtracting fractions accurately in a familiar context.
Assessed by: Exit ticket of four short items
Prerequisites
Close these gaps first — each has its own free lesson, worksheet and quiz.
How Subtracting Fractions works
Subtracting fractions works like adding: match the denominators, subtract the numerators, simplify.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.2/5 − 2/5 = ?[1]
- 2.1/6 − 1/6 = ?[1]
- 3.1/2 − 1/2 = ?[1]
- 4.2/3 − 1/3 = ?[1]
- 5.2/3 − 2/9 = ?[2]
- 6.3/4 − 1/2 = ?[2]
- 7.6/7 − 6/8 = ?[2]
- 8.3/7 − 3/8 = ?[2]
- 9.1/2 − 1/4 = ?[3]
- 10.8/9 − 1/2 = ?[3]
- 11.4/2 − 4/9 = ?[3]
- 12.1/7 − 1/9 = ?[3]
Show answers and working
1. 0
Common denominator: 5. 2/5 − 2/5 = 0/5. Simplify: 0
2. 0
Common denominator: 6. 1/6 − 1/6 = 0/6. Simplify: 0
3. 0
Common denominator: 2. 1/2 − 1/2 = 0/2. Simplify: 0
4. 1/3
Common denominator: 3. 2/3 − 1/3 = 1/3. Simplify: 1/3
5. 4/9
Common denominator: 9. 6/9 − 2/9 = 4/9. Simplify: 4/9
6. 1/4
Common denominator: 4. 3/4 − 2/4 = 1/4. Simplify: 1/4
7. 3/28
Common denominator: 56. 48/56 − 42/56 = 6/56. Simplify: 3/28
8. 3/56
Common denominator: 56. 24/56 − 21/56 = 3/56. Simplify: 3/56
9. 1/4
Common denominator: 4. 2/4 − 1/4 = 1/4. Simplify: 1/4
10. 7/18
Common denominator: 18. 16/18 − 9/18 = 7/18. Simplify: 7/18
11. 14/9
Common denominator: 18. 36/18 − 8/18 = 28/18. Simplify: 14/9
12. 2/63
Common denominator: 63. 9/63 − 7/63 = 2/63. Simplify: 2/63
Worked examples
6/9 − 6/9 = ?
- Common denominator: 9.
- 6/9 − 6/9 = 0/9.
- Simplify: 0
- Answer: 0
1/3 − 1/4 = ?
- Common denominator: 12.
- 4/12 − 3/12 = 1/12.
- Simplify: 1/12
- Answer: 1/12
1/2 − 1/3 = ?
- Common denominator: 6.
- 3/6 − 2/6 = 1/6.
- Simplify: 1/6
- Answer: 1/6
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Subtracts the denominators.
Correction: Keep the common denominator — only the numerators change.
Puts the smaller fraction first.
Correction: Compare the fractions first to see which is bigger.
Teacher tips
- · Ask for a quick estimate: is the answer more or less than 1/2?
Parent tips
- · Ask how much pizza is left after some is eaten.
Real-life applications
- · Working out how much is left after using part of something.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
Every free resource for Subtracting Fractions
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Frequently asked
- Is this Grade 3 Subtracting Fractions worksheet really free?
- Yes. Every worksheets on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
- What should a learner already know before this?
- Start with Adding Fractions, Fraction Models, Integers. Each one has its own free lesson, worksheet and quiz.
- How is the worksheet sequenced?
- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Subtracting Fractions?
- Move on to Multiplying Fractions, Dividing Fractions, Fraction of a Quantity, Fractions to Decimals, which build directly on this idea.
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