Measurement Imperial System Foot (‘) – Inch (“)

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Presentation transcript:

Measurement

Imperial System Foot (‘) – Inch (“)

To make things fit ……. The standard of measurement is a foot (abbreviated as ft and indicated by the symbol ‘ ) One foot is divided into 12 inches (abbreviated as in and indicated by the symbol “ ) For increased accuracy, each inch is divided into fractional segments, the most common divisions being 1 / 16 th, 16 divisions in one inch

The center mark between numbers is 1/2. The red lines on these rulers are marked at 1/2, and 1.

The next smallest marks on a ruler are 1/4ths. The red marks on these rulers are at 1/4, 1/2, 3/4, and 1. (1/2 is the same as 2/4)

The next smallest marks on a ruler are 1/8ths. The red marks on these rulers are at 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, and 1.

The next smallest mark, if there are any, are 1/16ths. The red marks on this ruler are at 1/16, 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, and 1.

To write a measurement write the whole inch, leave a space then the fraction. …… 3 3/8”……. 6 7/8” ……..

Check your tape measure – Can you find 3/8” ½” ¼” 5/8” 2 1/8” 4 ¾” 6 11/16”

Estimation A Guess based on knowledge or information gained through observation….. Indicators ………..

Questions???