Metric Ruler Measurement Practice
A Grade 3 math worksheet focused on practicing measurement with a metric ruler, understanding centimeters and millimeters.
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Metric Ruler Measurement Practice
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Date:
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Read each question carefully and use your metric ruler to measure the lines and objects. Remember that 1 centimeter (cm) is equal to 10 millimeters (mm).
Use your ruler to measure the length of each line to the nearest centimeter.
1.
Length: cm
2.
Length: cm
3.
Length: cm
Look at the ruler below. What measurement is shown by the arrow?
Measurement: cm
Fill in the blanks with the correct number.
1. 1 cm = mm
2. 3 cm = mm
3. 70 mm = cm
4. 5 cm and 4 mm = mm
1. Which is the best estimate for the length of a crayon?
1 cm
10 cm
100 cm
1000 cm
2. Which is the best estimate for the width of your thumb?
1 mm
1 cm
10 cm
1 meter
Draw a line that is 8 cm long.
Draw a line that is 3 cm and 5 mm long.
Read each statement and circle True or False.
1. A ruler is used to measure length.
True
False
2. Millimeters are larger than centimeters.
True
False