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Compare Lengths
Grade 1 - Math - Challenge Me
Worksheet 1
1Which object is longer?
2Which object is shorter?
3A ribbon is 6 units long. Another ribbon is 3 units long. How many units longer is the first ribbon?
4Order these lengths from shortest to longest: 6, 12, 10
5Which sentence compares 5 units and 4 units correctly?
6Which object is longer?
7Which object is shorter?
8A ribbon is 11 units long. Another ribbon is 3 units long. How many units longer is the first ribbon?
9Order these lengths from shortest to longest: 10, 5, 10
10Which sentence compares 10 units and 9 units correctly?
About this worksheet
Before children measure precisely, they need to compare and order lengths directly. First graders learn to decide which object is longer or shorter, arrange several objects by length, and reason about differences. This sounds simple, but children may be distracted by where an object is placed on the page or by its color. The mathematical comparison depends on endpoint alignment and equal units. This worksheet uses drawn measurement bars and short descriptions to ask which item is longer, which is shorter, how much longer one item is, and what order fits three lengths. Support pages use clear differences. Standard and challenge versions include closer lengths and mixed language so the child must read the comparison word carefully. Ask children to line up imaginary starting points before deciding.
What your child will learn
Compare two lengths
Order three objects by length
Use longer and shorter accurately
Find a length difference in units
Worked example
A ribbon that is 8 units long is 3 units longer than a ribbon that is 5 units long.
Common mistake
Comparing where objects end without noticing whether they start at the same place.