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Estimation practice

Estimation word problems

Read original addition and subtraction stories, round the quantities to a stated place and give an estimated answer with its unit. Choose two-, three- or four-digit quantities.

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Worksheet · LetterWorksheet · A4
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Read the question and identify the operation. Round each quantity to the requested place, calculate with the rounded numbers, and write an estimated answer with the correct unit.

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US Letter

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A4

Student worksheetWorksheet with answers
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Ready-made PDFs are in English and include Letter and A4 versions. The file with answers adds a separate key with the same question positions. The preview shows the first page; downloads include every page.

Use the generator to change the number range, estimation format, question count or worksheet language. A long teacher note or translated instructions may add a page.

Learning objective

What this activity builds

Choose the operation described by a context and use rounded quantities to answer an explicitly approximate question.

Worked example

A library receives 246 books in one delivery and 318 in another. About how many books arrive altogether? Round each quantity to the nearest ten.

250 + 320 = 570, so about 570 books.

The question asks for an estimate. The exact total is 564 books, but the required method is to round the two deliveries separately before adding. Keep the unit books in the answer.

Teaching notes

Make the practice count

  • Ask students to identify the unit and the operation before doing any rounding.
  • Five questions make a short discussion sheet. Ten provide a standard practice set; fifteen offer an extended review with room for working.
  • Mixed stories include both addition and subtraction. Have students explain whether they are combining quantities or finding a difference.
  • The answer key shows the rounded calculation and a contextual estimated answer. Use it to discuss the method as well as the final number.
  • Grade links describe readiness, not a claim that every country teaches the skill in the same school year. Choose the number range learners can already read.

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Math SheetNameScore/ 10TeacherDateEstimation word problemsFor each story, round both operands to the nearest tens, then estimate. Show the rounded-number calculation and name the answer unit. Roundhalfway values upward.1.A nature reserve recorded 75 trail visitors in spring and 36 in summer. About how many visitors were recorded?Working:2.A produce warehouse received 80 apples and 60 oranges. About how many pieces of fruit arrived?Working:3.A nursery raised 72 vegetable seedlings and 24 flower seedlings. About how many seedlings did it raise?Working:4.A museum recorded 26 guests at one exhibition and 86 at another. About how many guests were recorded?Working:5.Volunteers packed 69 meals in one week and 10 the next. About how many meals did they pack?Working:6.Two neighborhoods collected 67 and 37 cans for recycling. About how many cans did they collect?Working:7.A school district received 63 notebooks and 96 pencil cases. About how many supplies arrived?Working:8.Two library branches catalogued 78 and 39 books. About how many books did they catalogue altogether?Working:math-sheet.comPage 1 / 2
Math SheetNameScore/ 10TeacherDateEstimation word problemsFor each story, round both operands to the nearest tens, then estimate. Show the rounded-number calculation and name the answer unit. Roundhalfway values upward.9.A station counted 29 morning passengers and 46 afternoon passengers. About how many passengers used the station?Working:10.A theater season sold 39 tickets online and 74 at the box office. About how many tickets were sold?Working:math-sheet.comPage 2 / 2

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