Free Grade 3 Estimation in Context Essentials Lessons
Free Grade 3 lessons for Estimation in Context Essentials: 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
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain estimation in context essentials
Explain estimation in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate estimation in context essentials
Calculate estimation in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare estimation in context essentials
Compare estimation in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify estimation in context essentials
Justify estimation in context essentials 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 Essentials 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 474 to the nearest 10.[1]
- 2.Round 773 to the nearest 10.[1]
- 3.Round 753 to the nearest 10.[1]
- 4.Round 615 to the nearest 10.[1]
- 5.Round 6,498 to the nearest 100.[2]
- 6.Round 6,788 to the nearest 10.[2]
- 7.Round 7,726 to the nearest 10.[2]
- 8.Round 5,367 to the nearest 100.[2]
- 9.Round 89,230 to the nearest 100.[3]
- 10.Round 72,958 to the nearest 1,000.[3]
- 11.Round 91,084 to the nearest 1,000.[3]
- 12.Round 99,227 to the nearest 100.[3]
Show answers and working
1. 470
Find the two multiples of 10 either side: 470 and 480. Look at the digit to the right of the rounding place: 5 or more rounds up. 474 rounds to 470.
2. 770
Find the two multiples of 10 either side: 770 and 780. Look at the digit to the right of the rounding place: 5 or more rounds up. 773 rounds to 770.
3. 750
Find the two multiples of 10 either side: 750 and 760. Look at the digit to the right of the rounding place: 5 or more rounds up. 753 rounds to 750.
4. 620
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. 615 rounds to 620.
5. 6,500
Find the two multiples of 100 either side: 6400 and 6500. Look at the digit to the right of the rounding place: 5 or more rounds up. 6498 rounds to 6500.
6. 6,790
Find the two multiples of 10 either side: 6780 and 6790. Look at the digit to the right of the rounding place: 5 or more rounds up. 6788 rounds to 6790.
7. 7,730
Find the two multiples of 10 either side: 7720 and 7730. Look at the digit to the right of the rounding place: 5 or more rounds up. 7726 rounds to 7730.
8. 5,400
Find the two multiples of 100 either side: 5300 and 5400. Look at the digit to the right of the rounding place: 5 or more rounds up. 5367 rounds to 5400.
9. 89,200
Find the two multiples of 100 either side: 89200 and 89300. Look at the digit to the right of the rounding place: 5 or more rounds up. 89230 rounds to 89200.
10. 73,000
Find the two multiples of 1000 either side: 72000 and 73000. Look at the digit to the right of the rounding place: 5 or more rounds up. 72958 rounds to 73000.
11. 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. 91084 rounds to 91000.
12. 99,200
Find the two multiples of 100 either side: 99200 and 99300. Look at the digit to the right of the rounding place: 5 or more rounds up. 99227 rounds to 99200.
Worked examples
Round 479 to the nearest 10.
- Find the two multiples of 10 either side: 470 and 480.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 479 rounds to 480.
- Answer: 480
Round 629 to the nearest 100.
- Find the two multiples of 100 either side: 600 and 700.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 629 rounds to 600.
- Answer: 600
Round 92,042 to the nearest 1,000.
- Find the two multiples of 1000 either side: 92000 and 93000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 92042 rounds to 92000.
- Answer: 92,000
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 Essentials lesson really free?
- Yes. Every lessons 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. Each one has its own free lesson, worksheet and quiz.
- How is the lesson 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 Essentials?
- Move on to Estimation in Context Techniques, Estimation in Context Word Problems, Estimation in Context Common Errors, Introducing Estimation, which build directly on this idea.
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