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Grade 5/Measurement

Mixed Units (Challenge)

Convert between mixed metric units of length.
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Easy
1
12 questions
2
12 questions
Medium
1
12 questions
2
12 questions
Hard
1
12 questions
2
12 questions
3
12 questions
4
12 questions
Prerequisites
Convert m and km6 WS
3 km = ____ m
What to Do Next
Metric Units with Decimals12 WS
2.5 cm = ____ mm

Practice Questions

  1. 2 m = ? cm
    Show answer

    200

  2. 30 mm = ? cm
    Show answer

    3

  3. 5 km = ? m
    Show answer

    5,000

  4. 400 cm = ? m
    Show answer

    4

  5. 8 cm = ? mm
    Show answer

    80

Quick Tip
10 mm (millimeter) = 1 cm (centimeter)   |   100 cm = 1 m (meter)   |   1,000 m = 1 km (kilometer)
Teacher Resources
Teaching Notes

This collection focuses on mixed units (challenge). Ensure students understand the base-10 nature of the metric system. Use rulers and meter sticks for hands-on learning.

Vocabulary
metric units: Units like millimeters, centimeters, meters, kilometers.
conversion factor: The number used to change units.
Common Mistakes
  • Confusing the conversion factors (e.g., 10 vs 100)
  • Multiplying instead of dividing or vice versa
  • Forgetting to label units
  • Misplacing the decimal point
  • Incorrect operation (mult/div)
  • Wrong conversion factor (10, 100, 1000)
  • Decimal point errors
  • Confusing units (e.g., mm and cm)
Differentiation
SupportProvide a conversion chart. Use concrete examples like the width of a finger (cm) or thickness of a dime (mm).
ChallengeChallenge students to convert across multiple steps (e.g., mm to m) or use decimals.
Discussion Questions
  • Why is the metric system easier to use than customary units?
  • When would you use kilometers instead of meters?
  • How does multiplying by 10, 100, or 1000 change a number?
  • Why are metric units based on powers of ten?
  • When would you use millimeters versus kilometers?
  • How does metric conversion relate to decimals?
  • Can you convert km to mm in one step? How?
Extension Activities
  • Measure objects in the classroom.
  • Estimate lengths before measuring.
  • Create a 'Metric Olympics' event.
Parent Tip

Use a tape measure to find objects' lengths, then ask your child to convert units.

Learning Path
Skill Cluster

Measurement and Data

Estimated Time

15 minutes

Skills Practiced
Mixed units challenge