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### Course: Grade 7 (VA SOL)>Unit 1

Lesson 1: Comparing & ordering rational numbers

# Comparing rational numbers

Comparing Rational Numbers.

## Want to join the conversation?

• Is "zero" is a Rational number?

Is "zero" Is Negative or Positive?

• Zero is rational since it has no decimal places. It is neither positive nor negative. Positive is defined as being more than 0 and negative as less than 0, and clearly zero is neither more or less than itself.
• Question: How does Sal put his screen like that and change the colors and stuff and how does he write SO good with a mouse. Like I try and it's just awful.
• Me three!
But he does it on a tablet, that's why it looks so neat. And he probably uses a touch screen pen or something.
• which whiteboard website do you use in the videos? I really want to know
• Excuse everyone saying things that aren't true, he uses SmoothDraw. It's downloadable on computer or a drawing tablet.
• What IS a rational number? Is it a negative number?
• A rational number is a ratio such as 8 in 8/1.Howeversome of these numbers can be negative number such as -8 in -8/1.

There is no limit to rational numbers, as there are billions of numbers we've never seen before. Pi is an irrational number because it never repeats and it goes on forever. Anything other than pi is a qualification as a rational number! Some examples would be -435,646,434,973! Any crazy number that you can think of is rational. And you may be asking; "well, numbers like 1/3 go on forever, are they irrational?" and the answer is no, they are not irrational. A rational number is an integer divided by another integer. Fractions can be written as repeating and non- repeating decimal numbers. So, 1/3 is a rational number. It is also the division of two integers, which means you can divide it evenly.

There are other irrational numbers such as the square root of primes/prime numbers (√2 and such), logarithms of primes with prime base (log²3 and such), special numbers (Pi, Euler’s number, Golden Ratio and such), and many others. Hope this helped!
• I still don't get how to get it