Free Grade 3 Introducing Estimation Lesson Plans
Free Grade 3 lesson plans for Introducing Estimation: 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
Foundation
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing estimation
Identify introducing estimation accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing estimation
Explain introducing estimation accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing estimation
Calculate introducing estimation accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing estimation
Compare introducing estimation 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 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 946 to the nearest 10.[1]
- 2.Round 122 to the nearest 10.[1]
- 3.Round 566 to the nearest 10.[1]
- 4.Round 649 to the nearest 10.[1]
- 5.Round 5,271 to the nearest 10.[2]
- 6.Round 6,304 to the nearest 100.[2]
- 7.Round 3,758 to the nearest 100.[2]
- 8.Round 6,124 to the nearest 100.[2]
- 9.Round 99,002 to the nearest 1,000.[3]
- 10.Round 97,937 to the nearest 1,000.[3]
- 11.Round 75,182 to the nearest 100.[3]
- 12.Round 60,348 to the nearest 1,000.[3]
Show answers and working
1. 950
Find the two multiples of 10 either side: 940 and 950. Look at the digit to the right of the rounding place: 5 or more rounds up. 946 rounds to 950.
2. 120
Find the two multiples of 10 either side: 120 and 130. Look at the digit to the right of the rounding place: 5 or more rounds up. 122 rounds to 120.
3. 570
Find the two multiples of 10 either side: 560 and 570. Look at the digit to the right of the rounding place: 5 or more rounds up. 566 rounds to 570.
4. 650
Find the two multiples of 10 either side: 640 and 650. Look at the digit to the right of the rounding place: 5 or more rounds up. 649 rounds to 650.
5. 5,270
Find the two multiples of 10 either side: 5270 and 5280. Look at the digit to the right of the rounding place: 5 or more rounds up. 5271 rounds to 5270.
6. 6,300
Find the two multiples of 100 either side: 6300 and 6400. Look at the digit to the right of the rounding place: 5 or more rounds up. 6304 rounds to 6300.
7. 3,800
Find the two multiples of 100 either side: 3700 and 3800. Look at the digit to the right of the rounding place: 5 or more rounds up. 3758 rounds to 3800.
8. 6,100
Find the two multiples of 100 either side: 6100 and 6200. Look at the digit to the right of the rounding place: 5 or more rounds up. 6124 rounds to 6100.
9. 99,000
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. 99002 rounds to 99000.
10. 98,000
Find the two multiples of 1000 either side: 97000 and 98000. Look at the digit to the right of the rounding place: 5 or more rounds up. 97937 rounds to 98000.
11. 75,200
Find the two multiples of 100 either side: 75100 and 75200. Look at the digit to the right of the rounding place: 5 or more rounds up. 75182 rounds to 75200.
12. 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. 60348 rounds to 60000.
Worked examples
Round 776 to the nearest 10.
- 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.
- 776 rounds to 780.
- Answer: 780
Round 834 to the nearest 10.
- Find the two multiples of 10 either side: 830 and 840.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 834 rounds to 830.
- Answer: 830
Round 46,552 to the nearest 100.
- Find the two multiples of 100 either side: 46500 and 46600.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 46552 rounds to 46600.
- Answer: 46,600
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 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 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 Introducing Estimation?
- Move on to Working with Estimation, Estimation in Context, Reading Whole Numbers, Place Value, which build directly on this idea.
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