Skill: Find the difference between two lengths
Explanation and Free Practice Resources
Finding the difference between two lengths means determining how much longer one whole-number measurement is than another when both are expressed in the same unit, by interpreting the gap as subtraction. A number line, ruler scale, or bar model can represent the endpoints and the distance between them, supporting the distinction between the difference and the total length; this work does not include unit conversions, fractional measurements, or more complex measures.
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Detailed Explanation: Find the difference between two lengths
When two lengths use the same unit, the difference tells how much longer one length is than the other. Find the difference by subtracting the shorter length from the longer length.
Example: A ribbon is centimeters long. A string is centimeters long. How much longer is the ribbon?
- Identify the longer length: cm.
- Identify the shorter length: cm.
- Subtract:
The ribbon is centimeters longer than the string.
The difference is the gap between the two lengths, not the total length when they are put together.
Learn by doing: Find the difference between two lengths
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Practice:
Measurement - Subtract String Lengths - Inches
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Download/Modify Free Grade 2 'Find the difference between two lengths' Worksheet
Print this free 'Find the difference between two lengths' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Measurement - Subtract String Lengths - Inches
- Measurement - Subtract String Lengths - Meters
- Measurement - Subtract String Lengths - Tens of Centimeters, Answer in Centimeters
- Measurement - Subtract String Lengths - Centimeters, Answer in Centimeters
- Measurement - Subtract String Lengths - Centimeters
- Measurement - Subtract String Lengths - Feet
- Measurement Less or More - Length (customary)
- Measurement - Compare Length - Which is Longer or Shorter
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Find the difference between two lengths) through scaffolded problems that grow in difficulty as concepts are understood.