Free Grade 3 Introducing Estimation Essentials Lessons
Free Grade 3 lessons for Introducing Estimation 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing estimation essentials
Explain introducing estimation essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing estimation essentials
Calculate introducing estimation essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing estimation essentials
Compare introducing estimation essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing estimation essentials
Justify introducing estimation 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 Introducing Estimation 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 751 to the nearest 10.[1]
- 2.Round 764 to the nearest 10.[1]
- 3.Round 760 to the nearest 10.[1]
- 4.Round 728 to the nearest 10.[1]
- 5.Round 5,434 to the nearest 10.[2]
- 6.Round 6,284 to the nearest 100.[2]
- 7.Round 9,236 to the nearest 10.[2]
- 8.Round 6,990 to the nearest 10.[2]
- 9.Round 78,552 to the nearest 1,000.[3]
- 10.Round 18,239 to the nearest 100.[3]
- 11.Round 14,474 to the nearest 1,000.[3]
- 12.Round 18,846 to the nearest 1,000.[3]
Show answers and working
1. 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. 751 rounds to 750.
2. 760
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. 764 rounds to 760.
3. 760
Find the two multiples of 10 either side: 760 and 760. Look at the digit to the right of the rounding place: 5 or more rounds up. 760 rounds to 760.
4. 730
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. 728 rounds to 730.
5. 5,430
Find the two multiples of 10 either side: 5430 and 5440. Look at the digit to the right of the rounding place: 5 or more rounds up. 5434 rounds to 5430.
6. 6,300
Find the two multiples of 100 either side: 6200 and 6300. Look at the digit to the right of the rounding place: 5 or more rounds up. 6284 rounds to 6300.
7. 9,240
Find the two multiples of 10 either side: 9230 and 9240. Look at the digit to the right of the rounding place: 5 or more rounds up. 9236 rounds to 9240.
8. 6,990
Find the two multiples of 10 either side: 6990 and 6990. Look at the digit to the right of the rounding place: 5 or more rounds up. 6990 rounds to 6990.
9. 79,000
Find the two multiples of 1000 either side: 78000 and 79000. Look at the digit to the right of the rounding place: 5 or more rounds up. 78552 rounds to 79000.
10. 18,200
Find the two multiples of 100 either side: 18200 and 18300. Look at the digit to the right of the rounding place: 5 or more rounds up. 18239 rounds to 18200.
11. 14,000
Find the two multiples of 1000 either side: 14000 and 15000. Look at the digit to the right of the rounding place: 5 or more rounds up. 14474 rounds to 14000.
12. 19,000
Find the two multiples of 1000 either side: 18000 and 19000. Look at the digit to the right of the rounding place: 5 or more rounds up. 18846 rounds to 19000.
Worked examples
Round 164 to the nearest 10.
- Find the two multiples of 10 either side: 160 and 170.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 164 rounds to 160.
- Answer: 160
Round 7,262 to the nearest 10.
- Find the two multiples of 10 either side: 7260 and 7270.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 7262 rounds to 7260.
- Answer: 7,260
Round 6,142 to the nearest 1,000.
- Find the two multiples of 1000 either side: 6000 and 7000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 6142 rounds to 6000.
- Answer: 6,000
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 Introducing Estimation 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 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 Introducing Estimation Essentials?
- Move on to Introducing Estimation Techniques, Introducing Estimation Word Problems, Introducing Estimation Common Errors, Working with Estimation, which build directly on this idea.
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