Converting Units of Length

Year 6 Measurement and geometry WA6MMGTW2 6 pages · 33 questions Core

Year 6 Converting Units of Length Worksheet

Free Year 6 converting length worksheet (WA6MMGTW2): measuring with a ruler and converting mm, cm, m and km, including decimals like 2.35 km. With key.

What's covered
  • Measuring lengths in mm and cm
  • Converting between mm, cm, m and km
  • Converting decimal lengths, e.g. 0.4 m to mm

Updated Sep 2026 · No sign-up needed

About this worksheet

This free Year 6 converting units of length worksheet is written for the Western Australian curriculum and mapped to SCSA content description WA6MMGTW2. It focuses on one skill and is full of hands-on activities where children shade, draw, label and complete diagrams. By the end, students can say “I can measure lengths and convert between mm, cm, m and km, including decimals.”

What’s inside

  • Key idea box – a short explanation with a worked, visual example to read before starting.
  • A · Warm up (16 questions) – quick draw, shade and write practice to build confidence.
  • B · Practise (9 questions) – worded problems in everyday Australian contexts, most with a diagram to work on.
  • C · Think it through (5 questions) – explain your thinking: spot the mistake, true or false, always–sometimes–never, odd one out.
  • D · Challenge (3 questions) – harder multi-step and problem-solving questions for students ready to stretch.
  • Separate marking key – every answer with working, the correct shading and drawings shown in colour, and marking criteria for reasoning questions.

Skills covered

  • Measuring lengths in mm and cm
  • Converting between mm, cm, m and km
  • Converting decimal lengths, e.g. 0.4 m to mm

How to use this worksheet

Print the worksheet in black and white – all shading shows clearly in grey. Read the Key idea box together, then complete Section A. Most students should attempt Sections B and C; Section D suits students aiming high or preparing for extension and selective-entry maths. The worksheet is marked out of 56, and the score box on the last page shows which section needs more practice.

Common mistakes to watch for

  • Multiplying by 10 to change m to cm
  • Dividing when changing to a smaller unit
  • Measuring from the end of the ruler instead of 0
  • Writing 6 m 5 cm as 6.5 m instead of 6.05 m

Where this fits in the WA Year 6 sequence

Converting Units of Length sits in the Two-dimensional space and structures sub-strand of Measurement and geometry. It is one of a set of short, single-skill EduLift worksheets that split each Year 6 content description into sub-skills. Use the previous and next links to work through the sequence in order.

Common errors we see in tutoring

  • Multiplying by 10 to change m to cm
  • Dividing when changing to a smaller unit
  • Measuring from the end of the ruler instead of 0
  • Writing 6 m 5 cm as 6.5 m instead of 6.05 m
Answer key (with worked solutions)

The answer key is a separate PDF with every question worked, not just the final answers.

Download the answer key (PDF)

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