Free Grade 3 What is Working with Estimation in Context Common Errors Flashcards
Free Grade 3 flashcards for What is Working with Estimation in Context 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
Higher
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain what is working with estimation in context common errors
Explain what is working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate what is working with estimation in context common errors
Calculate what is working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare what is working with estimation in context common errors
Compare what is working with estimation in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify what is working with estimation in context common errors
Justify what is working with estimation in context 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 What is Working with Estimation in Context 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 328 to the nearest 10.[1]
- 2.Round 380 to the nearest 10.[1]
- 3.Round 625 to the nearest 10.[1]
- 4.Round 262 to the nearest 10.[1]
- 5.Round 8,025 to the nearest 10.[2]
- 6.Round 5,757 to the nearest 10.[2]
- 7.Round 8,587 to the nearest 10.[2]
- 8.Round 9,462 to the nearest 100.[2]
- 9.Round 95,686 to the nearest 100.[3]
- 10.Round 17,541 to the nearest 1,000.[3]
- 11.Round 32,575 to the nearest 1,000.[3]
- 12.Round 61,013 to the nearest 100.[3]
Show answers and working
1. 330
Find the two multiples of 10 either side: 320 and 330. Look at the digit to the right of the rounding place: 5 or more rounds up. 328 rounds to 330.
2. 380
Find the two multiples of 10 either side: 380 and 380. Look at the digit to the right of the rounding place: 5 or more rounds up. 380 rounds to 380.
3. 630
Find the two multiples of 10 either side: 620 and 630. Look at the digit to the right of the rounding place: 5 or more rounds up. 625 rounds to 630.
4. 260
Find the two multiples of 10 either side: 260 and 270. Look at the digit to the right of the rounding place: 5 or more rounds up. 262 rounds to 260.
5. 8,030
Find the two multiples of 10 either side: 8020 and 8030. Look at the digit to the right of the rounding place: 5 or more rounds up. 8025 rounds to 8030.
6. 5,760
Find the two multiples of 10 either side: 5750 and 5760. Look at the digit to the right of the rounding place: 5 or more rounds up. 5757 rounds to 5760.
7. 8,590
Find the two multiples of 10 either side: 8580 and 8590. Look at the digit to the right of the rounding place: 5 or more rounds up. 8587 rounds to 8590.
8. 9,500
Find the two multiples of 100 either side: 9400 and 9500. Look at the digit to the right of the rounding place: 5 or more rounds up. 9462 rounds to 9500.
9. 95,700
Find the two multiples of 100 either side: 95600 and 95700. Look at the digit to the right of the rounding place: 5 or more rounds up. 95686 rounds to 95700.
10. 18,000
Find the two multiples of 1000 either side: 17000 and 18000. Look at the digit to the right of the rounding place: 5 or more rounds up. 17541 rounds to 18000.
11. 33,000
Find the two multiples of 1000 either side: 32000 and 33000. Look at the digit to the right of the rounding place: 5 or more rounds up. 32575 rounds to 33000.
12. 61,000
Find the two multiples of 100 either side: 61000 and 61100. Look at the digit to the right of the rounding place: 5 or more rounds up. 61013 rounds to 61000.
Worked examples
Round 598 to the nearest 10.
- Find the two multiples of 10 either side: 590 and 600.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 598 rounds to 600.
- Answer: 600
Round 271 to the nearest 100.
- Find the two multiples of 100 either side: 200 and 300.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 271 rounds to 300.
- Answer: 300
Round 20,847 to the nearest 100.
- Find the two multiples of 100 either side: 20800 and 20900.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 20847 rounds to 20800.
- Answer: 20,800
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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- Start with Rules and Methods in Estimation in Context Common Errors. Each one has its own free lesson, worksheet and quiz.
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