Free Grade 3 Estimation in Context Lesson Plans
Free Grade 3 lesson plans for Estimation in Context: 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
Core
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain estimation in context
Explain estimation in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate estimation in context
Calculate estimation in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare estimation in context
Compare estimation in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify estimation in context
Justify estimation 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 Estimation in Context 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 769 to the nearest 10.[1]
- 2.Round 595 to the nearest 10.[1]
- 3.Round 667 to the nearest 10.[1]
- 4.Round 991 to the nearest 10.[1]
- 5.Round 1,733 to the nearest 10.[2]
- 6.Round 1,583 to the nearest 100.[2]
- 7.Round 4,569 to the nearest 100.[2]
- 8.Round 6,198 to the nearest 10.[2]
- 9.Round 20,316 to the nearest 100.[3]
- 10.Round 33,648 to the nearest 100.[3]
- 11.Round 87,163 to the nearest 1,000.[3]
- 12.Round 44,873 to the nearest 100.[3]
Show answers and working
1. 770
Find the two multiples of 10 either side: 760 and 770. Look at the digit to the right of the rounding place: 5 or more rounds up. 769 rounds to 770.
2. 600
Find the two multiples of 10 either side: 590 and 600. Look at the digit to the right of the rounding place: 5 or more rounds up. 595 rounds to 600.
3. 670
Find the two multiples of 10 either side: 660 and 670. Look at the digit to the right of the rounding place: 5 or more rounds up. 667 rounds to 670.
4. 990
Find the two multiples of 10 either side: 990 and 1000. Look at the digit to the right of the rounding place: 5 or more rounds up. 991 rounds to 990.
5. 1,730
Find the two multiples of 10 either side: 1730 and 1740. Look at the digit to the right of the rounding place: 5 or more rounds up. 1733 rounds to 1730.
6. 1,600
Find the two multiples of 100 either side: 1500 and 1600. Look at the digit to the right of the rounding place: 5 or more rounds up. 1583 rounds to 1600.
7. 4,600
Find the two multiples of 100 either side: 4500 and 4600. Look at the digit to the right of the rounding place: 5 or more rounds up. 4569 rounds to 4600.
8. 6,200
Find the two multiples of 10 either side: 6190 and 6200. Look at the digit to the right of the rounding place: 5 or more rounds up. 6198 rounds to 6200.
9. 20,300
Find the two multiples of 100 either side: 20300 and 20400. Look at the digit to the right of the rounding place: 5 or more rounds up. 20316 rounds to 20300.
10. 33,600
Find the two multiples of 100 either side: 33600 and 33700. Look at the digit to the right of the rounding place: 5 or more rounds up. 33648 rounds to 33600.
11. 87,000
Find the two multiples of 1000 either side: 87000 and 88000. Look at the digit to the right of the rounding place: 5 or more rounds up. 87163 rounds to 87000.
12. 44,900
Find the two multiples of 100 either side: 44800 and 44900. Look at the digit to the right of the rounding place: 5 or more rounds up. 44873 rounds to 44900.
Worked examples
Round 284 to the nearest 10.
- 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.
- 284 rounds to 280.
- Answer: 280
Round 2,901 to the nearest 10.
- Find the two multiples of 10 either side: 2900 and 2910.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 2901 rounds to 2900.
- Answer: 2,900
Round 99,511 to the nearest 1,000.
- Find the two multiples of 1000 either side: 99000 and 100000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 99511 rounds to 100000.
- Answer: 100,000
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
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Estimation 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 Estimation, Introducing Estimation, Rounding. 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 Estimation in Context?
- Move on to Reading Whole Numbers, Place Value, Digits, Comparing Numbers, which build directly on this idea.
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