Practice Length Measurement in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Worksheet PDF Free Answer-key PDF Family

Quick Recap

Measuring how long something is using standard units (cm, m, in, ft) by finding the difference between start and end marks.

Measuring length is like asking 'how many of this unit fit end-to-end along the object?' Lay paper clips along a pencil—the number of clips is its length in paper-clip units.

Showing a random 20 of 65 problems.

Example 1

medium
Three boards are 30 cm, 45 cm, and 25 cm. Laid end to end, what is the total length?

Example 2

easy
A jump rope is 4 feet long. A pet leash is 7 feet long. Which is longer, and by how many feet?

Example 3

easy
A book is 4 blocks long. How long is the book in blocks?

Example 4

medium
A rug is 1 m 30 cm long. How many centimeters long is the rug?

Example 5

easy
A toy car is 5 inches long. A toy truck is 8 inches long. How many inches longer is the truck?

Example 6

easy
Liam wants to measure a marker with paperclips. The chain is 7 paperclips long. How long is the marker?

Example 7

medium
Liam's pencil is 18 cm long. His friend's pencil is 9 cm long. How many centimeters longer is Liam's pencil?

Example 8

easy
A bus and a car are parked. Which one is longer?

Example 9

medium
You lay 3 paper clips end to end, each 4 cm. How long is the chain?

Example 10

easy
A spoon is 3 blocks long. A fork is 4 blocks long. Which is longer?

Example 11

medium
You have a long red string and a short blue string. The red string is below the blue string. Which one is longer?

Example 12

easy
Mom is tall. You are small. Who is taller?

Example 13

medium
Two pieces of string are 35 cm and 48 cm. How much longer is the second?

Example 14

medium
A jump rope is 2 feet long. How many inches long is the jump rope?

Example 15

medium
A bookshelf is 36 inches long. A book is 12 inches wide. How many books can fit side by side on the shelf?

Example 16

medium
Which is the better unit for the length of a soccer field: meters or millimeters?

Example 17

easy
An object spans from the 2 cm mark to the 7 cm mark. How long is it?

Example 18

easy
How many centimeters are in 1 meter?

Example 19

easy
How many inches are in 1 foot?

Example 20

medium
Sara's hair ribbon is 9 inches. Her sister's ribbon is 6 inches. How many inches longer is Sara's ribbon?
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