# Ch 4: ELM Test - Numbers and Data: Irrational Numbers

Let us help you get ready for your ELM competency exam. Review working with irrational numbers through our short, user-friendly video lessons and self-assessing quizzes.

## ELM Numbers and Data: Irrational Numbers - Chapter Summary

Use our targeted video lessons to review for your ELM competency exam. The lessons in this chapter address the following crucial math concepts:

• Evaluating the square roots of perfect squares
• Estimating square roots
• Simplifying square roots of imperfect squares
• Simplifying complex expressions that include square roots

You can practice the strategies for evaluating and estimating square roots with our short, engaging lessons. End each lesson by completing the quick, interactive quiz to check for topic mastery.

### ELM Numbers and Data Objectives

You'll most likely be required to take the ELM if you're planning to attend a school in the California State University system. The ELM exam allocates about 35% of its total questions to numbers and data-related topics. The entire test contains 50 questions, and you can take up to 90 minutes to complete it. You should expect to see questions concerning the following objectives in the Numbers and Data portion of your test:

• Estimating and evaluating square roots
• Understanding and using basic arithmetic calculations
• Solving problems using fractions, decimals and percents
• Interpreting and using proportion and ratio
• Understanding print and electronic data presented in charts, tables, graphs and histograms
• Interpreting and calculating the median and the arithmetic mean

You can get ready for the ELM with our help. Work your way through this chapter's lessons that address square roots in addition to completing the other chapters concerned with numbers and data.

4 Lessons in Chapter 4: ELM Test - Numbers and Data: Irrational Numbers
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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