What Are Significant Digits? - Definition, Rules & Examples


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question 1 of 3

Which of the following has two significant digits?

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1. Zeros are always significant if they are:

2. How many significant digits are in 845.003?

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About This Quiz & Worksheet

Significant digits are helpful to be familiar with when dealing with figures, and this quiz/worksheet will help you assess your understanding of their definition and let you put your knowledge to the test with practice problems.

Quiz & Worksheet Goals

In these assessments you'll be tested on various features of significant digits, including:

  • Identifying significant digits
  • When zeros are significant
  • The definition of significant digits

Skills Practiced

This quiz and worksheet allow students to test the following skills:

  • Defining key concepts - ensure that you can accurately define significant digits
  • Interpreting information - verify that you can read information regarding significant digits and use it to correctly identify them
  • Information recall - access the knowledge you've gained regarding when zeros are significant

Additional Learning

To learn more about what constitutes significant digits, review the accompanying lesson titled What Are Significant Digits? - Definition, Rules & Examples. This lesson covers the following objectives:

  • Define significant digits
  • Understand how to count and identify significant digits
  • Familiarize yourself with the rules of significant digits
  • Differentiate between leading and trailing zeros