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Measuring Length

Measuring Length. Using Centimeters. example. The line is 4.2 cm. Start the ruler at zero. The tiny spaces between the larger numbered lines are millimeters. They are one tenth of a centimeter. Notice the line is 4 whole centimeters and two tenths of centimeter. Millimeters.

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Measuring Length

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  1. Measuring Length Using Centimeters

  2. example • The line is 4.2 cm. • Start the ruler at zero. • The tiny spaces between the larger numbered lines are millimeters. • They are one tenth of a centimeter. • Notice the line is 4 whole centimeters and two tenths of centimeter.

  3. Millimeters • Each centimeter has 10 smaller divisions. • These are millimeters. • 3.4 centimeters or 3.4 cm is the same as 3 centimeters and 4 millimeters.

  4. Perimeter

  5. Perimeter • Add the lengths of all the edges • This is the perimeter of a shape.

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