Free Grade 3 Comparing Decimals Worksheets
Free Grade 3 worksheets for Comparing Decimals: 12 real questions with a full answer key and worked solutions. Decimals extend place value past the ones: tenths, hundredths, thousandths. Line up decimal points when adding or subtracting.
Free
Core
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain comparing decimals
Explain comparing decimals accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate comparing decimals
Calculate comparing decimals accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare comparing decimals
Compare comparing decimals accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify comparing decimals
Justify comparing decimals 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 Comparing Decimals works
Decimals extend place value past the ones: tenths, hundredths, thousandths. Line up decimal points when adding or subtracting.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.2.4 + 43.5 = ?[1]
- 2.43.8 − 7.6 = ?[1]
- 3.74.4 + 85.8 = ?[1]
- 4.91 − 19.4 = ?[1]
- 5.5.85 − 2.44 = ?[2]
- 6.4.83 − 0.01 = ?[2]
- 7.5.22 − 3.17 = ?[2]
- 8.2.08 − 1.99 = ?[2]
- 9.0.497 × 2 = ?[3]
- 10.0.245 × 2 = ?[3]
- 11.0.372 × 8 = ?[3]
- 12.0.551 × 3 = ?[3]
Show answers and working
1. 45.9
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Add as whole numbers: 45.9.
2. 36.2
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 36.2.
3. 160.2
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Add as whole numbers: 160.2.
4. 71.6
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 71.6.
5. 3.41
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 3.41.
6. 4.82
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 4.82.
7. 2.05
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 2.05.
8. 0.09
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 0.09.
9. 0.994
Ignore the decimal: 497 × 2 = 994. Put back 3 decimal places: 0.994.
10. 0.49
Ignore the decimal: 245 × 2 = 490. Put back 3 decimal places: 0.49.
11. 2.976
Ignore the decimal: 372 × 8 = 2976. Put back 3 decimal places: 2.976.
12. 1.653
Ignore the decimal: 551 × 3 = 1653. Put back 3 decimal places: 1.653.
Worked examples
76.3 + 48.2 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 1 decimal place.
- Add as whole numbers: 124.5.
- Answer: 124.5
9.69 − 5.81 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 2 decimal places.
- Subtract as whole numbers: 3.88.
- Answer: 3.88
0.702 × 6 = ?
- Ignore the decimal: 702 × 6 = 4212.
- Put back 3 decimal places: 4.212.
- Answer: 4.212
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Thinks 0.25 is bigger than 0.3 because 25 > 3.
Correction: Fill with zeros: 0.25 vs 0.30.
Lines up the last digits instead of the decimal points.
Correction: Decimal points go in one straight column.
Teacher tips
- · Use money to make tenths and hundredths concrete.
Parent tips
- · Add up prices with cents together.
Real-life applications
- · Money, measurements, race times.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
Every free resource for Comparing Decimals
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Frequently asked
- Is this Grade 3 Comparing Decimals 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 Reading Decimals, Decimal Place Value, Fractions. 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 Comparing Decimals?
- Move on to Rounding Decimals, Adding Decimals, Multiplying Decimals, Dividing Decimals, which build directly on this idea.
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