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Worksheet3rd GradeLevel 3 · Challenge

Free 3rd Grade Metric Conversions Worksheet — Level 3

Convert between mm, cm, m, km; g and kg; mL and L. A challenge set for students ready to stretch further. This 3rd Grade worksheet has 14 questions and comes with a full answer sheet showing the working for every question.

Need more practice? Practice Set 2 · Practice Set 3 · Practice Set 4 — same skill, fresh questions, full answers.

Instant download · No sign-up · Free for personal, classroom and homeschool use

Grade
3rd Grade
Subject
Math
Topic
Units & Conversions
Difficulty
Level 3 · Challenge
Estimated time
10 minutes
Curriculum
Texas grade levels (TEKS)
Questions
14
Answers
Included, with working
Format
PDF (A4), print or complete online

Students will practice

  • converting between metric units
  • multiplying and dividing by 10, 100 and 1000

Curriculum: Texas grade levels (TEKS). We show specific outcome codes only where they have been verified against the official curriculum document.

What's next?

Completed: 3rd Grade Metric Conversions Worksheet — Level 3

Ready for more? Move on to 4th Grade Math.

← Easier: Level 2 · Standard

How to use this worksheet

  1. Print the PDF or complete it on screen. Write the student's name and date at the top.
  2. Read the instructions for each part together before starting. Encourage working to be shown, not just answers.
  3. Mark with the answer sheet. Compare the method, not only the final answer, and give credit for correct working.
  4. Record the score, celebrate what went well, then follow the "What's next" suggestion.

Common questions

Who is this worksheet for?

3rd Grade students (typically ages 8–9) working on units & conversions. It is pitched at level 3 · challenge; an easier version is linked above.

Are the answers included?

Yes. The PDF includes a full answer sheet with the working for every question. You can also view the answers online.

How long does it take?

About 10 minutes for 14 questions. Short, regular sessions work best: two or three a week beats one long one.

Do I need to sign up to download?

No. Click Download Free PDF and it opens immediately. It is free for personal, classroom and homeschool use.

What should we do next?

Explore more 3rd Grade mathematics resources.

Preview

Success TutoringWorksheets3rd Grade · Mathematics · Units & Conversions

3rd Grade Metric Conversions Worksheet — Level 3

Name

Date

Score /

Remember: 1 cm = 10 mm, 1 m = 100 cm, 1 km = 1000 m, 1 kg = 1000 g, 1 L = 1000 mL.

1.9.413 m = (answer space) cm
2.4586 mL = (answer space) L
3.737.6 cm = (answer space) m
4.3545 mL = (answer space) L
5.619 cm = (answer space) m
6.8018 mL = (answer space) L
7.3.642 km = (answer space) m
8.9298 mL = (answer space) L
9.2.461 m = (answer space) mm
10.272 m = (answer space) km
11.657.6 cm = (answer space) m
12.5058 g = (answer space) kg
Free worksheets at worksheets.successtutoring.com · © Success Tutoring · Free for personal and classroom use

Preview — the PDF contains the full resource and answer sheet.

More 3rd Grade units & conversions resources

  • Worksheet

    3rd Grade Metric Conversions Worksheet — Level 1

    Convert between mm, cm, m, km; g and kg; mL and L. Builds confidence with the core skill before adding complexity. This 3rd Grade…

    Difficulty
    Level 1 · Easier
    Time
    10 min
    Questions
    14 questions
    Answers
    Answers included
  • Worksheet

    3rd Grade Metric Conversions Worksheet — Level 2

    Convert between mm, cm, m, km; g and kg; mL and L. Expected-level practice for this grade. This 3rd Grade worksheet has 14 questions and…

    Difficulty
    Level 2 · Standard
    Time
    10 min
    Questions
    14 questions
    Answers
    Answers included

Units & Conversions in other year levels

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About this resource

Created by
Success Tutoring Maths Team
Reviewed by
Success Tutoring
Last reviewed
1 October 2026
How it was made
Generated by checked procedures

Free to print and share for personal, classroom and homeschool use. Please don't resell. Spotted an error? Let us know.