Common Core Math Vocabulary

Inch - Definition with Examples

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What is an inch? 
An inch can be defined as a unit of length in the customary system of measurement.
Length in inches is either represented by in or ‘’. For instance, 5 inches can be written as 16 in or 16’’.
An inch is equal to image 1 yard and image 2 of a foot.
An inch in metric system is exactly 2.54 cms.

There are two half inches and four quarter inches in one whole inch.

Inches, half inch and quarter inch on a ruler

  Fun Facts

  • A penny is about image 3 of an inch across, while a quarter is just slightly less than 1 inch.

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Length of the an old tree so tall,
Or the height of the broken wall,
Or the length of a ribbon so small.
With an inch tape, we measure them all!

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Give you child sticks, straws and ribbons of different measures. Ask them to use the ruler correctly and note the length of each in inches. Explain how much a quarter or half inch measures.

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