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Scientists study fossils to learn about prehistoric plants and animals. Discover how precise measurements help determine origins. Take a closer look at a dinosaur tooth to practice measuring in decimals and enhance your scientific skills!
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EXAMPLE 1 Writing Measurements as Decimals
EXAMPLE 1 Writing Measurements as Decimals Fossils Scientists study fossils to learn about plants and animals that lived in prehistoric times. The size of a fossil can help a scientist figure out what type of plant or animal it came from. A scientist finds a dinosaur tooth that is about 3 centimeters long. What is a more precise measurement for the tooth? You can use decimal parts of a centimeter to find out.
EXAMPLE 1 Writing Measurements as Decimals To answer the question above about dinosaur teeth, use a metric ruler and write your answer as a decimal number of centimeters.
EXAMPLE 1 Writing Measurements as Decimals
EXAMPLE 1 Writing Measurements as Decimals From the metric ruler you can see that 2 millimeters is 2 tenths centimeter. The length is about 3 and 2 tenths centimeters.
EXAMPLE 1 Writing Measurements as Decimals From the metric ruler you can see that 2 millimeters is 2 tenths centimeter. The length is about 3 and 2 tenths centimeters. ANSWER The length of the dinosaur tooth is about 3.2 centimeters.
for Example 1 for Example 1 GUIDED PRACTICE GUIDED PRACTICE Write the length of the line segment as a decimal number of centimeters. 1.
for Example 1 GUIDED PRACTICE Write the length of the line segment as a decimal number of centimeters. 1. ANSWER The length is about 2.6 centimeters.
for Example 1 GUIDED PRACTICE Write the length of the line segment as a decimal number of centimeters. 2.
for Example 1 GUIDED PRACTICE Write the length of the line segment as a decimal number of centimeters. 2. ANSWER The length is about 3.3 centimeters.