A rope is 45 centimeters long. Another rope is 18 centimeters long. How much longer is the first rope?

Q: What will my child learn in "Add and subtract measurement amounts"?

Add or subtract measurements with matching units. This 3rd Grade Math lesson builds the skill Measure and solve with standard metric and customary units with a concept card and practice.

Q: What grade level is "Add and subtract measurement amounts" for?

"Add and subtract measurement amounts" is a 3rd Grade Math lesson in the Time and money unit, designed for students around ages 8-9.

Q: How many practice questions are in this lesson?

This lesson includes 20 practice questions with instant feedback. Guests can try a few for free, and signed-in learners get the full adaptive set that adjusts to their level.

Q: How does Sparq help with "Add and subtract measurement amounts"?

Sparq is a safe AI tutor that gives kid-friendly hints and explains Add and subtract measurement amounts step by step, helping students learn without just giving away the answer.

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No account is needed to start — guests can try this 3rd Grade Math lesson for free. Signing in saves progress, unlocks more practice questions, and tracks mastery.

Question

A rope is 45 centimeters long. Another rope is 18 centimeters long. How much longer is the first rope?

Accepted Answer

27 centimeters