Free Grade 3 Working with Rounding Common Errors Lessons
Free Grade 3 lessons for Working with Rounding Common Errors: 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with rounding common errors
Identify working with rounding common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with rounding common errors
Explain working with rounding common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with rounding common errors
Calculate working with rounding common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with rounding common errors
Compare working with rounding common errors 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 Working with Rounding Common Errors 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 452 to the nearest 10.[1]
- 2.Round 751 to the nearest 10.[1]
- 3.Round 104 to the nearest 10.[1]
- 4.Round 460 to the nearest 10.[1]
- 5.Round 2,765 to the nearest 100.[2]
- 6.Round 9,152 to the nearest 100.[2]
- 7.Round 9,891 to the nearest 10.[2]
- 8.Round 1,323 to the nearest 10.[2]
- 9.Round 88,380 to the nearest 100.[3]
- 10.Round 12,143 to the nearest 100.[3]
- 11.Round 15,884 to the nearest 1,000.[3]
- 12.Round 24,196 to the nearest 100.[3]
Show answers and working
1. 450
Find the two multiples of 10 either side: 450 and 460. Look at the digit to the right of the rounding place: 5 or more rounds up. 452 rounds to 450.
2. 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.
3. 100
Find the two multiples of 10 either side: 100 and 110. Look at the digit to the right of the rounding place: 5 or more rounds up. 104 rounds to 100.
4. 460
Find the two multiples of 10 either side: 460 and 460. Look at the digit to the right of the rounding place: 5 or more rounds up. 460 rounds to 460.
5. 2,800
Find the two multiples of 100 either side: 2700 and 2800. Look at the digit to the right of the rounding place: 5 or more rounds up. 2765 rounds to 2800.
6. 9,200
Find the two multiples of 100 either side: 9100 and 9200. Look at the digit to the right of the rounding place: 5 or more rounds up. 9152 rounds to 9200.
7. 9,890
Find the two multiples of 10 either side: 9890 and 9900. Look at the digit to the right of the rounding place: 5 or more rounds up. 9891 rounds to 9890.
8. 1,320
Find the two multiples of 10 either side: 1320 and 1330. Look at the digit to the right of the rounding place: 5 or more rounds up. 1323 rounds to 1320.
9. 88,400
Find the two multiples of 100 either side: 88300 and 88400. Look at the digit to the right of the rounding place: 5 or more rounds up. 88380 rounds to 88400.
10. 12,100
Find the two multiples of 100 either side: 12100 and 12200. Look at the digit to the right of the rounding place: 5 or more rounds up. 12143 rounds to 12100.
11. 16,000
Find the two multiples of 1000 either side: 15000 and 16000. Look at the digit to the right of the rounding place: 5 or more rounds up. 15884 rounds to 16000.
12. 24,200
Find the two multiples of 100 either side: 24100 and 24200. Look at the digit to the right of the rounding place: 5 or more rounds up. 24196 rounds to 24200.
Worked examples
Round 674 to the nearest 10.
- Find the two multiples of 10 either side: 670 and 680.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 674 rounds to 670.
- Answer: 670
Round 9,217 to the nearest 100.
- Find the two multiples of 100 either side: 9200 and 9300.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 9217 rounds to 9200.
- Answer: 9,200
Round 51,651 to the nearest 1,000.
- Find the two multiples of 1000 either side: 51000 and 52000.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 51651 rounds to 52000.
- Answer: 52,000
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 Working with Rounding Common Errors 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 Rounding Word Problems, Working with Rounding Techniques, Introducing 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 Working with Rounding Common Errors?
- Move on to Introducing Rounding, Rounding in Context, which build directly on this idea.
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