Grade 3 test questions: identifying cm vs m length units

📚 Quick Study Guide

• 📏 Centimeter (cm): A small unit of length. Think of the width of your pinky finger!
• 🏢 Meter (m): A larger unit of length. About the height of a doorknob.
• 🔢 Conversion: 1 meter (m) = 100 centimeters (cm)
• 💡 Choosing the Right Unit: Use centimeters for smaller objects like books or pencils. Use meters for larger objects like rooms or trees.
• 📝 Example: Measuring a notebook? Use cm. Measuring a playground? Use m.

Practice Quiz

1. Which unit would you use to measure the length of a crayon?
   1. Centimeters (cm)
   2. Meters (m)
   3. Kilometers (km)
   4. Millimeters (mm)
2. What is the best unit to measure the height of a classroom door?
   1. Centimeters (cm)
   2. Meters (m)
   3. Millimeters (mm)
   4. Kilometers (km)
3. A ribbon is 200 cm long. How long is it in meters?
   1. 1 meter
   2. 2 meters
   3. 3 meters
   4. 4 meters
4. Which of these is best measured in meters?
   1. Your math book
   2. A soccer field
   3. Your pencil
   4. A ladybug
5. Which of these is best measured in centimeters?
   1. A house
   2. A car
   3. A coin
   4. A park
6. A table is 1 meter long. How many centimeters is that?
   1. 10 cm
   2. 50 cm
   3. 100 cm
   4. 1000 cm
7. The height of a juice box is best measured using:
   1. Meters (m)
   2. Centimeters (cm)
   3. Kilometers (km)
   4. Liters (L)