Free Grade 3 Working with Estimation in Context Common Errors Lesson Plans
Free Grade 3 lesson plans for Working with Estimation in Context Common Errors: 12 real questions with a full answer key and worked solutions. Rounding gives a simpler number that is close to the real one. Look at the digit just right of the place you round to: 5 or more rounds up, 4 or less rounds down.
Free
Higher
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with estimation in context common errors
Identify working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with estimation in context common errors
Explain working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with estimation in context common errors
Calculate working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with estimation in context common errors
Compare working with estimation in context common errors 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 Working with Estimation in Context Common Errors works
Rounding gives a simpler number that is close to the real one. Look at the digit just right of the place you round to: 5 or more rounds up, 4 or less rounds down.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Round 283 to the nearest 10.[1]
- 2.Round 388 to the nearest 10.[1]
- 3.Round 613 to the nearest 10.[1]
- 4.Round 572 to the nearest 10.[1]
- 5.Round 9,152 to the nearest 10.[2]
- 6.Round 3,927 to the nearest 100.[2]
- 7.Round 3,469 to the nearest 100.[2]
- 8.Round 3,187 to the nearest 100.[2]
- 9.Round 49,986 to the nearest 100.[3]
- 10.Round 91,373 to the nearest 1,000.[3]
- 11.Round 8,753 to the nearest 100.[3]
- 12.Round 93,064 to the nearest 100.[3]
Show answers and working
1. 280
Find the two multiples of 10 either side: 280 and 290. Look at the digit to the right of the rounding place: 5 or more rounds up. 283 rounds to 280.
2. 390
Find the two multiples of 10 either side: 380 and 390. Look at the digit to the right of the rounding place: 5 or more rounds up. 388 rounds to 390.
3. 610
Find the two multiples of 10 either side: 610 and 620. Look at the digit to the right of the rounding place: 5 or more rounds up. 613 rounds to 610.
4. 570
Find the two multiples of 10 either side: 570 and 580. Look at the digit to the right of the rounding place: 5 or more rounds up. 572 rounds to 570.
5. 9,150
Find the two multiples of 10 either side: 9150 and 9160. Look at the digit to the right of the rounding place: 5 or more rounds up. 9152 rounds to 9150.
6. 3,900
Find the two multiples of 100 either side: 3900 and 4000. Look at the digit to the right of the rounding place: 5 or more rounds up. 3927 rounds to 3900.
7. 3,500
Find the two multiples of 100 either side: 3400 and 3500. Look at the digit to the right of the rounding place: 5 or more rounds up. 3469 rounds to 3500.
8. 3,200
Find the two multiples of 100 either side: 3100 and 3200. Look at the digit to the right of the rounding place: 5 or more rounds up. 3187 rounds to 3200.
9. 50,000
Find the two multiples of 100 either side: 49900 and 50000. Look at the digit to the right of the rounding place: 5 or more rounds up. 49986 rounds to 50000.
10. 91,000
Find the two multiples of 1000 either side: 91000 and 92000. Look at the digit to the right of the rounding place: 5 or more rounds up. 91373 rounds to 91000.
11. 8,800
Find the two multiples of 100 either side: 8700 and 8800. Look at the digit to the right of the rounding place: 5 or more rounds up. 8753 rounds to 8800.
12. 93,100
Find the two multiples of 100 either side: 93000 and 93100. Look at the digit to the right of the rounding place: 5 or more rounds up. 93064 rounds to 93100.
Worked examples
Round 234 to the nearest 10.
- Find the two multiples of 10 either side: 230 and 240.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 234 rounds to 230.
- Answer: 230
Round 9,867 to the nearest 100.
- Find the two multiples of 100 either side: 9800 and 9900.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 9867 rounds to 9900.
- Answer: 9,900
Round 44,725 to the nearest 1,000.
- Find the two multiples of 1000 either side: 44000 and 45000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 44725 rounds to 45000.
- Answer: 45,000
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Looks at the wrong digit to decide whether to round up.
Correction: Underline the rounding place, then circle the digit to its right.
Changes the digits after the rounding place to anything other than 0.
Correction: Every digit after the rounding place becomes 0.
Teacher tips
- · Use a number line showing the two multiples either side.
Parent tips
- · Estimate the shopping bill to the nearest dollar.
Real-life applications
- · Estimating the total of a shopping trip before paying.
Assessment objectives
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Frequently asked
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- 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 Rules and Methods in Estimation in Context Common Errors, Key Vocabulary of Estimation in Context Common Errors, Estimation in Context Word Problems. 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 Working with Estimation in Context Common Errors?
- Move on to Estimation in Context Common Errors in Examinations, Estimation in Context Essentials, Estimation in Context Techniques, Estimation in Context Word Problems, which build directly on this idea.
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