Estimating and Comparing Real Numbers

General Skills

You will turn irrational numbers into practical tools by producing rational approximations. Using trial squaring, calculator rounding, and number line plotting, you will learn to compare irrationals with rationals and estimate the results of real-world arithmetic expressions.

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4 lessons

12 practices

1 hour

Analyzing Number Properties

Course details

Refining Square Roots

Preview

Complete The Square Root Statements

Finding Roots By Trial Squaring

Explain Trial Squaring Estimate

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11