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Measuring in Centimeters

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Tip: download the PDF for Letter or A4 paper, print it at 100% and use a pencil or crayon. Tap "Show solution" to check your answer, or print it as an answer key.

Up nextReading a Bar Graph →

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A 15 centimeter ruler with millimeter marks, and seven pencils, crayons, ribbons and straws to measure to the nearest centimeter. Every object starts at the zero line, so children only need to read where it ends and decide which whole centimeter is closest. Printed at 100% on A4 paper the ruler shows true centimeters, so a school ruler works as well; on Letter paper, use the ruler on the sheet. A good partner for the inch sheet, so children see both systems. Page 2 is the answer key.

Also try: Reading a Bar Graph · Make a Bar Graph · Rounding to the Nearest 10 and 100

Tips for this measurement worksheet

  • Start at zero, not at the end of the ruler.
  • The long lines are centimeters, the small ones millimeters.
  • Find the centimeter line closest to the end.

Page 2 of the PDF is the answer key. Print at 100% (Actual size), not “Fit to page”: the inch rulers are true size on US Letter and the centimeter ruler on A4. When this sheet feels easy, move on to the line plot worksheet, which puts lengths like these on a graph. See all measurement worksheets.

For teachers and parents

What it practises
Area by counting squares and by multiplying, perimeter of rectangles and other shapes, measuring to the nearest inch, half inch and centimeter, reading and making bar graphs, picture graphs and line plots, elapsed time
How to use it
Colour the squares for area and trace the edge for perimeter. Print the ruler sheets at 100% (Actual size). Read the scale or key before any graph. Answers on page 2.
Time
About 15–20 minutes

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Paste this into your school, class or library web page. It shows the picture and a link back here, so families can print it themselves. You can change the wording.

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Printing tips

  • Colour the squares as you count them so none is counted twice.
  • Trace round the edge with a finger for perimeter, saying each length.
  • Read the scale of a graph before reading any bar.

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