ERHS Chem CK-12 Chapter 2 - Scientific Measurement

This target represents:

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

The measurement is 7.1 cm in length.

• 7 is the estimated digit
• 1 is the estimated digit
• 7 is the uncertain digit
• Both 7 and 1 are estimated digits

This target represents:

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

There are __?__ significant digits in the number: 90,000.00

• 1
• 2
• 5
• 7

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Tags

CCSS.8.EE.A.4

What should be the correct answer to the problem shown below when the answer is rounded for the correct significant figures?

23.91 x 12.861 = 307.50651

• 308

• 307.51

• 307.5

• 307

What should be the correct answer to the problem shown below when the answer is rounded for the correct significant figures?

12.0025 + 1.41 = 13.4125

• 13.4125

• 13

• 13.4

• 13.41

A set of data are not close to each other, but the average of the data is very close to the actual value can be described as:

• accurate
• precise
• both precise and accurate
• neither precise or accurate

Which lists metric units, in order, from smallest to largest?

• milligram, centigram, gram
• kilogram, gram, centigram
• decagram, hectogram, milligram
• kilogram, hectogram, decagram

The base unit for length in the SI or metric system is the:

• second
• gram
• meter
• liter