Free Grade 3 Estimation in Context Lessons
Free Grade 3 lessons 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
Stretch
25 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 900 to the nearest 10.[1]
- 2.Round 197 to the nearest 10.[1]
- 3.Round 552 to the nearest 10.[1]
- 4.Round 870 to the nearest 10.[1]
- 5.Round 3,312 to the nearest 10.[2]
- 6.Round 7,700 to the nearest 10.[2]
- 7.Round 9,803 to the nearest 100.[2]
- 8.Round 1,843 to the nearest 10.[2]
- 9.Round 60,164 to the nearest 1,000.[3]
- 10.Round 50,186 to the nearest 1,000.[3]
- 11.Round 17,282 to the nearest 100.[3]
- 12.Round 58,911 to the nearest 1,000.[3]
Show answers and working
1. 900
Find the two multiples of 10 either side: 900 and 900. Look at the digit to the right of the rounding place: 5 or more rounds up. 900 rounds to 900.
2. 200
Find the two multiples of 10 either side: 190 and 200. Look at the digit to the right of the rounding place: 5 or more rounds up. 197 rounds to 200.
3. 550
Find the two multiples of 10 either side: 550 and 560. Look at the digit to the right of the rounding place: 5 or more rounds up. 552 rounds to 550.
4. 870
Find the two multiples of 10 either side: 870 and 870. Look at the digit to the right of the rounding place: 5 or more rounds up. 870 rounds to 870.
5. 3,310
Find the two multiples of 10 either side: 3310 and 3320. Look at the digit to the right of the rounding place: 5 or more rounds up. 3312 rounds to 3310.
6. 7,700
Find the two multiples of 10 either side: 7700 and 7700. Look at the digit to the right of the rounding place: 5 or more rounds up. 7700 rounds to 7700.
7. 9,800
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. 9803 rounds to 9800.
8. 1,840
Find the two multiples of 10 either side: 1840 and 1850. Look at the digit to the right of the rounding place: 5 or more rounds up. 1843 rounds to 1840.
9. 60,000
Find the two multiples of 1000 either side: 60000 and 61000. Look at the digit to the right of the rounding place: 5 or more rounds up. 60164 rounds to 60000.
10. 50,000
Find the two multiples of 1000 either side: 50000 and 51000. Look at the digit to the right of the rounding place: 5 or more rounds up. 50186 rounds to 50000.
11. 17,300
Find the two multiples of 100 either side: 17200 and 17300. Look at the digit to the right of the rounding place: 5 or more rounds up. 17282 rounds to 17300.
12. 59,000
Find the two multiples of 1000 either side: 58000 and 59000. Look at the digit to the right of the rounding place: 5 or more rounds up. 58911 rounds to 59000.
Worked examples
Round 726 to the nearest 10.
- Find the two multiples of 10 either side: 720 and 730.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 726 rounds to 730.
- Answer: 730
Round 8,998 to the nearest 100.
- Find the two multiples of 100 either side: 8900 and 9000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 8998 rounds to 9000.
- Answer: 9,000
Round 9,427 to the nearest 1,000.
- Find the two multiples of 1000 either side: 9000 and 10000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 9427 rounds to 9000.
- Answer: 9,000
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.
Every free resource for Estimation in Context
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Frequently asked
- Is this Grade 3 Estimation in Context 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, Introducing Estimation, Rounding. 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?
- Move on to Reading Whole Numbers, Place Value, Digits, Comparing Numbers, which build directly on this idea.
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