Worksheet Library / Measurement
Ordering Three Lengths Worksheets
Use the worked example and teaching sequence below to explain the reasoning before independent practice.
Use New Numbers to make another set. Choose Worksheet or Answer Key, then use the worksheet’s Print button.
Teaching Notes
Use the worked example and teaching sequence below to explain the reasoning before independent practice.
Before You Begin
- Recognize equal measurement units.
Teaching Steps for Parents and Teachers
- Align the starting points when comparing lengths.
- Read the scale interval and measure from zero, or subtract the starting reading.
- State the length with its unit.
Worked Examples
A segment begins at 2 cm and ends at 7 cm. Find its length.
- Subtract the starting reading from the ending reading.
- 7 − 2 = 5.
Answer: 5 cm
Common Mistakes and How to Help
An ending ruler reading is not the length unless the object starts at zero.
Can you count five 1-cm intervals?
Questions to Check Understanding
- Can you count five 1-cm intervals?
- What in the numbers or diagram supports your answer?
Practice Advice
Work through the example together. Ask the learner to explain the first two problems, then try three independently. Review the first incorrect step before assigning more practice.
Next Practice
- Use New Numbers to practice the same skill with different values.
- If the learner needs help, return to the example and model each step before trying again.