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Rounding at the Zoo worksheet preview

Worksheet

Rounding at the Zoo

Grade 3 zoo-themed rounding practice: round whole numbers to the nearest 10 or 100 with number lines, halfway numbers, and an estimation story.

Grade 3MathInteractive · Printable

Aligned to3.NBT.A.1

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 Common Core standard
  • Printable answer key
  • 13 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 3
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

  • Students round whole numbers up to 1,000 to the nearest 10 and to the nearest 100.
  • Students round numbers that end in 5 or 50 up and choose numbers that round to a given value.
  • Students round numbers to the nearest 100 to estimate a sum in a story problem.

How to use

Use after teaching rounding on a number line. Have students find the two closest tens or hundreds before they round, then talk about the halfway rule together.

Curriculum

Common Core standard covered

3.NBT.A.1

Round whole numbers to the nearest 10 or 100.

Preview

OwlSheets.com

Name Date

Rounding at the Zoo

Round numbers to the nearest 10 or 100.

Round to the nearest 10

Round each number to the nearest 10. Use the number lines to help.

1.
The penguins ate 47 fish this morning.
4041424344454647484950

47 rounded to the nearest 10 is  .

2.
A baby giraffe weighs 132 pounds.

132 rounded to the nearest 10 is   pounds.

3.
Maria walked 365 steps from the gate to the lion house.
360361362363364365366367368369370

365 rounded to the nearest 10 is   steps.

4.
The zoo train carried 896 riders this week.

896 rounded to the nearest 10 is   riders.

5.
A zookeeper weighed six tortoises. Circle each weight that rounds to 60 pounds when you round to the nearest 10.

54 pounds55 pounds67 pounds58 pounds65 pounds63 pounds

Round to the nearest 100

Round each number to the nearest 100.

6.
On Monday, 382 people visited the reptile house.
300310320330340350360370380390400

382 rounded to the nearest 100 is   people.

7.
A zebra weighs 650 pounds.

650 rounded to the nearest 100 is   pounds.

8.
The aquarium has 249 fish.

249 rounded to the nearest 100 is   fish.

9.
Match each day's visitor count to the number rounded to the nearest 100.
  1. Tuesday: 418 visitors
  2. Wednesday: 551 visitors
  3. Thursday: 763 visitors
  4. Friday: 149 visitors
  1. A. 600
  2. B. 100
  3. C. 800
  4. D. 500
  5. E. 400
10.
Round each animal's weight to the nearest 100. Sort the weights.
349 pounds352 pounds310 pounds438 pounds299 pounds401 pounds
Rounds to 300Rounds to 400

Round and estimate

Use rounding to answer each question.

11.
Lucas walked 746 steps to see the bears. He rounds 746 to the nearest 10. Which answer is correct?
  • A. 700
  • B. 740
  • C. 750
  • D. 800
12.
On Saturday, 412 people visited the zoo. On Sunday, 289 people visited. Round each number to the nearest 100. Then add the rounded numbers to estimate how many people visited in all.

412 rounds to  .
289 rounds to  .
Estimate: about   people

13.
Ava says 450 rounds to 400 when you round to the nearest 100, because 450 is right in the middle. Is she correct? Explain.

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