Free Grade 3 Introducing Estimation Flashcards
Free Grade 3 flashcards 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
Stretch
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 313 to the nearest 10.[1]
- 2.Round 233 to the nearest 10.[1]
- 3.Round 295 to the nearest 10.[1]
- 4.Round 471 to the nearest 10.[1]
- 5.Round 8,230 to the nearest 100.[2]
- 6.Round 7,664 to the nearest 10.[2]
- 7.Round 9,164 to the nearest 100.[2]
- 8.Round 1,394 to the nearest 100.[2]
- 9.Round 6,941 to the nearest 1,000.[3]
- 10.Round 96,697 to the nearest 1,000.[3]
- 11.Round 25,405 to the nearest 100.[3]
- 12.Round 58,380 to the nearest 1,000.[3]
Show answers and working
1. 310
Find the two multiples of 10 either side: 310 and 320. Look at the digit to the right of the rounding place: 5 or more rounds up. 313 rounds to 310.
2. 230
Find the two multiples of 10 either side: 230 and 240. Look at the digit to the right of the rounding place: 5 or more rounds up. 233 rounds to 230.
3. 300
Find the two multiples of 10 either side: 290 and 300. Look at the digit to the right of the rounding place: 5 or more rounds up. 295 rounds to 300.
4. 470
Find the two multiples of 10 either side: 470 and 480. Look at the digit to the right of the rounding place: 5 or more rounds up. 471 rounds to 470.
5. 8,200
Find the two multiples of 100 either side: 8200 and 8300. Look at the digit to the right of the rounding place: 5 or more rounds up. 8230 rounds to 8200.
6. 7,660
Find the two multiples of 10 either side: 7660 and 7670. Look at the digit to the right of the rounding place: 5 or more rounds up. 7664 rounds to 7660.
7. 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. 9164 rounds to 9200.
8. 1,400
Find the two multiples of 100 either side: 1300 and 1400. Look at the digit to the right of the rounding place: 5 or more rounds up. 1394 rounds to 1400.
9. 7,000
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. 6941 rounds to 7000.
10. 97,000
Find the two multiples of 1000 either side: 96000 and 97000. Look at the digit to the right of the rounding place: 5 or more rounds up. 96697 rounds to 97000.
11. 25,400
Find the two multiples of 100 either side: 25400 and 25500. Look at the digit to the right of the rounding place: 5 or more rounds up. 25405 rounds to 25400.
12. 58,000
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. 58380 rounds to 58000.
Worked examples
Round 210 to the nearest 10.
- Find the two multiples of 10 either side: 210 and 210.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 210 rounds to 210.
- Answer: 210
Round 9,120 to the nearest 10.
- Find the two multiples of 10 either side: 9120 and 9120.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 9120 rounds to 9120.
- Answer: 9,120
Round 13,097 to the nearest 100.
- Find the two multiples of 100 either side: 13000 and 13100.
- Look at the digit to the right of the rounding place: 5 or more rounds up.
- 13097 rounds to 13100.
- Answer: 13,100
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 Introducing Estimation
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Frequently asked
- Is this Grade 3 Introducing Estimation flashcards really free?
- Yes. Every flashcards 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 flashcards 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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