Free Grade 3 Multiplying Decimals in Context Lesson Plans
Free Grade 3 lesson plans for Multiplying Decimals in Context: 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
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain multiplying decimals in context
Explain multiplying decimals in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate multiplying decimals in context
Calculate multiplying decimals in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare multiplying decimals in context
Compare multiplying decimals in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify multiplying decimals in context
Justify multiplying decimals in context 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 Multiplying Decimals in Context 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.
- 1.79 − 25.8 = ?[1]
- 2.89.7 + 29.7 = ?[1]
- 3.89.2 + 26.6 = ?[1]
- 4.95.8 − 14.4 = ?[1]
- 5.8.98 − 0.79 = ?[2]
- 6.2.58 + 2.58 = ?[2]
- 7.2.92 + 4.25 = ?[2]
- 8.7.26 − 2.86 = ?[2]
- 9.0.532 × 9 = ?[3]
- 10.0.944 × 2 = ?[3]
- 11.0.354 × 4 = ?[3]
- 12.0.149 × 8 = ?[3]
Show answers and working
1. 53.2
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 53.2.
2. 119.4
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Add as whole numbers: 119.4.
3. 115.8
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Add as whole numbers: 115.8.
4. 81.4
Line up the decimal points. Fill gaps with zeros so both have 1 decimal place. Subtract as whole numbers: 81.4.
5. 8.19
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 8.19.
6. 5.16
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Add as whole numbers: 5.16.
7. 7.17
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Add as whole numbers: 7.17.
8. 4.4
Line up the decimal points. Fill gaps with zeros so both have 2 decimal places. Subtract as whole numbers: 4.4.
9. 4.788
Ignore the decimal: 532 × 9 = 4788. Put back 3 decimal places: 4.788.
10. 1.888
Ignore the decimal: 944 × 2 = 1888. Put back 3 decimal places: 1.888.
11. 1.416
Ignore the decimal: 354 × 4 = 1416. Put back 3 decimal places: 1.416.
12. 1.192
Ignore the decimal: 149 × 8 = 1192. Put back 3 decimal places: 1.192.
Worked examples
77.2 − 64.1 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 1 decimal place.
- Subtract as whole numbers: 13.1.
- Answer: 13.1
7.81 − 0.9 = ?
- Line up the decimal points.
- Fill gaps with zeros so both have 2 decimal places.
- Subtract as whole numbers: 6.91.
- Answer: 6.91
0.419 × 5 = ?
- Ignore the decimal: 419 × 5 = 2095.
- Put back 3 decimal places: 2.095.
- Answer: 2.095
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 Multiplying Decimals in Context lesson plan really free?
- Yes. Every lesson plans 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 Working with Multiplying Decimals, Introducing Multiplying Decimals, Adding Decimals. Each one has its own free lesson, worksheet and quiz.
- How is the lesson plan 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 Multiplying Decimals in Context?
- Move on to Decimal Place Value, Reading Decimals, Comparing Decimals, Rounding Decimals, which build directly on this idea.
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