Free Grade 3 Introducing Adding Decimals Techniques Worksheets
Free Grade 3 worksheets for Introducing Adding Decimals Techniques: 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
Foundation
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing adding decimals techniques
Identify introducing adding decimals techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing adding decimals techniques
Explain introducing adding decimals techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing adding decimals techniques
Calculate introducing adding decimals techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing adding decimals techniques
Compare introducing adding decimals techniques 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 Introducing Adding Decimals Techniques 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.
- 1.42.4 − 14.6 = ?[1]
- 2.95 − 4.4 = ?[1]
- 3.97.3 − 26.7 = ?[1]
- 4.58.1 − 27.2 = ?[1]
- 5.8.85 − 4.9 = ?[2]
- 6.4.36 + 6.58 = ?[2]
- 7.0.95 + 4.19 = ?[2]
- 8.8.62 + 8.09 = ?[2]
- 9.0.444 × 7 = ?[3]
- 10.0.026 × 6 = ?[3]
- 11.0.893 × 6 = ?[3]
- 12.0.2 × 9 = ?[3]
Show answers and working
1. 27.8
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 27.8.
2. 90.6
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 90.6.
3. 70.6
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 70.6.
4. 30.9
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 30.9.
5. 3.95
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 3.95.
6. 10.94
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Add as whole numbers: 10.94.
7. 5.14
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Add as whole numbers: 5.14.
8. 16.71
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Add as whole numbers: 16.71.
9. 3.108
Ignore the decimal: 444 × 7 = 3108. Put back 3 decimal places: 3.108.
10. 0.156
Ignore the decimal: 26 × 6 = 156. Put back 3 decimal places: 0.156.
11. 5.358
Ignore the decimal: 893 × 6 = 5358. Put back 3 decimal places: 5.358.
12. 1.8
Ignore the decimal: 200 × 9 = 1800. Put back 3 decimal places: 1.8.
Worked examples
32 − 21.1 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 1 decimal place.
- Subtract as whole numbers: 10.9.
- Answer: 10.9
0.4 + 3.67 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 2 decimal places.
- Add as whole numbers: 4.07.
- Answer: 4.07
0.032 × 6 = ?
- Ignore the decimal: 32 × 6 = 192.
- Put back 3 decimal places: 0.192.
- Answer: 0.192
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.
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Frequently asked
- Is this Grade 3 Introducing Adding Decimals Techniques 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 Introducing Adding Decimals Essentials, Rounding Decimals. 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 Introducing Adding Decimals Techniques?
- Move on to Introducing Adding Decimals Word Problems, Introducing Adding Decimals Common Errors, Working with Adding Decimals, Adding Decimals in Context, which build directly on this idea.
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