Lesson 1: Measurement Systems - Imperial Ruler Example


EXAMPLE 1

State the length of the rectangle shown in the diagram.



Solution


This rectangle is between 3 and 4 inches, so it will be 3 and some fraction of an inch. The line of interest is the tenth of sixteen, between 3 and 4 inches, so the fraction is 10/16 which reduces to 5/8.

The rectangle is 3 5/8 inches long.

Alternatively, you can use the line length to determine the fraction. In decreasing order of length (from longest to shortest), the lines represent wholes, halves, quarters, eighths, and sixteenths. The line of interest is in the fourth longest group, so the fraction length will be measured in eighths of an inch. The rectangle lines up with the fifth line that is the same length as, or longer, than the line of interest. This means the rectangle is 3 5/8 inches long.


Now, it is your turn! Complete the questions in your Chapter 5, Lesson 1 Practice Makes Perfect that refer to Imperial Rulers.



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