Measurement Examples And Worksheet - A-64 Appendix 5 Page 15
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36A-77
V.2 Metric Units of Measurement
Use a metric ruler to measure lengths.
2
Parts of a metric ruler, scaled in centimeters, and a ruler scaled in inches are shown
below. Several lengths on the metric ruler are highlighted.
53 mm
2.54 cm = 1 in.
1 cm
Metric system
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Centimeters
American system
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2
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Inches
(Actual size)
Self Check 1
1
EXAMPLE
Find the length of the nail shown below.
To the nearest centimeter, find
the width of the circle.
Strategy
We will place a metric 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
The longest tick marks on the ruler (those labeled with numbers) mark lengths in
Now Try
Problem 23
centimeters. Since the pointed end of the nail lines up on 6, the nail is 6 centimeters
long.
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Centimeters
Self Check 2
2
EXAMPLE
Find the length of the paper clip shown below.
Find the length of the jumbo
paper clip.
Strategy
We will place a metric ruler below the paper clip, with the left end of the
ruler (which could be thought of as 0) directly underneath one end of the paper
clip.
Now Try
Problem 25
WHY
Then we can find the length of the paper clip by identifying where its other
end lines up on the tick marks printed in black on the ruler.
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