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# What is a nonstandard unit?

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A nonstandard unit is a unit of measure expressed in terms of an object such as a shoe, toothpick, paper clip or stick of gum, according to the Catholic School Department Diocese of Sacramento. It can also be expressed in informal terms such as a hand span or body length.

## Keep Learning

Nonstandard units are typically used when initially introducing young learners to various attributes and concepts involving measurement. These concepts include more of and less than, measuring by laying objects end to end, sorting and classifying into categories according to size, comparing the lengths of two objects by using a third, describing objects in terms of relative size, and ordering objects by length.

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## Related Questions

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To measure the acreage of an irregularly shaped lot, first measure the perimeter of the entire space in question. Next, divide the property on paper into as many triangles as fit the dimensions, calculate their areas and add them together. The proper tool for such calculations is Heron's formula.

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To measure the circumference of a circle, first measure the diameter and multiply that number by the mathematical constant pi. The diameter is a straight line that goes from one side of the circle to the other and passes through the center, and the value of pi is always 3.141592.

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While there are several main types of classifications, triangles are typically classified by the measure of their interior angles or the number of equal sides. Each of these classifications has three types of triangles.