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Measurement practice

Reading a metric ruler

Read eight marked endpoints on 10 cm scale windows that may begin from 1 cm through 89 cm, using increments from 1 cm to 0.5 mm.

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Read the marked endpoint on each scale. The scale may begin above zero.

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A4

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Learning objective

What this activity builds

Read an absolute position on a metric scale and connect centimeters with equivalent millimeters.

Worked example

A 10 cm window starts at 57 cm and the marker is at 60.5 cm. What is the endpoint?

60.5 cm, or 605 mm

Read the number at the endpoint on the displayed scale. Do not subtract the 57 cm starting value: 3.5 cm is the distance across the window, not the endpoint.

Teaching notes

Make the practice count

  • Name the first labeled value before following the ticks to the marker.
  • Use the 1 cm mode first, then add half-centimeter and millimeter subdivisions.
  • These diagrams are enlarged for reading and are not an actual-size measuring reference.

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Math SheetNameScore/ 8TeacherDateReading a metric rulerRead the marked endpoint on each scale. The scale may begin above zero.1.1617181920212223242526Endpoint: __________________ cm (or equivalent mm)2.3536373839404142434445Endpoint: __________________ cm (or equivalent mm)3.2930313233343536373839Endpoint: __________________ cm (or equivalent mm)4.2526272829303132333435Endpoint: __________________ cm (or equivalent mm)5.3536373839404142434445Endpoint: __________________ cm (or equivalent mm)6.1920212223242526272829Endpoint: __________________ cm (or equivalent mm)7.7071727374757677787980Endpoint: __________________ cm (or equivalent mm)8.2122232425262728293031Endpoint: __________________ cm (or equivalent mm)Math Sheet • Page 1

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