Measurement Examples And Worksheet - A-64 Appendix 5 Page 2
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36A-64
Appendix V Measurement
Solution
Self Check 1
3 –
1
in.
8
Since the tick marks between 0 and 1 on the
Find the length of the jumbo
ruler create eight equal spaces, the ruler is
paper clip.
scaled in eighths of an inch. The paper clip is
3
1
inches long.
8
1
2
3 –
8 spaces
in.
8
Now Try
Problem 27
Inches
Self Check 2
2
EXAMPLE
Find the length of the nail shown below.
Find the width of the circle.
Strategy
We will place a ruler below the nail, with the left end of the ruler (which
could be thought of as 0) directly underneath the head of the nail.
WHY
Then we can find the length of the nail by identifying where its pointed end
lines up on the tick marks printed in black on the ruler.
Solution
Since the tick marks between 0 and 1 on the ruler create sixteen equal spaces, the
Now Try
Problem 29
ruler is scaled in sixteenths of an inch.
7 ––
2
in.
16
1
2
3
16 spaces
7 ––
in.
16
Inches
7
The nail is
2
inches long.
16
Define American units of length.
2
The American system of measurement uses the units of inch, foot, yard, and mile to
measure length. These units are related in the following ways.
American Units of Length
1 foot (ft)
12 inches (in.)
1 yard (yd)
36 inches
1 yard
3 feet
1 mile (mi)
5,280 feet
The abbreviation for each unit is written within parentheses.
The Language of Mathematics
According to some sources, the inch was
originally defined as the length from the tip of the thumb to the first knuckle.
In some languages the word for inch is similar to or the same as thumb. For
example, in Spanish, pulgada is inch and pulgar is thumb. In Swedish, tum is
inch and tumme is thumb. In Italian, pollice is both inch and thumb.
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