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Intro to negative numbers

Learn what negative numbers are and how to plot them on the number line.
Here's a number line that should look very familiar. It starts at 0, then counts up by 1 from there:
We know that if we were to keep going to the right, we would have 11, then 12, and so on.
What happens if we keep going to the left of 0 though? We get negative numbers! To the left of 0 is minus, 1, then minus, 2, then minus, 3, and so on:

Let's practice!

Problem 1A
Move the dot to minus, 4.

Why do we need negative numbers?

Negative numbers help us describe values less than zero.

Example:

When the temperature is 8, degrees below 0, degrees, it is less than 0. We can say the temperature is minus, 8, degrees.

A few more negative situations

Problem 2A
A bank uses positive numbers to represent deposits and negative numbers to represent withdrawals.
How would a bank represent a withdrawal of 19, point, 43 dollars?
Choose 1 answer:
Choose 1 answer:

Want to join the conversation?

  • aqualine seed style avatar for user Martinez Cardajal,Dulce Ruby
    Can negative numders be turned into a fraction,decimal,and percent? If yes how can you do that?
    (16 votes)
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  • duskpin seed style avatar for user reyp1
    can negative numbers become fractions?
    (19 votes)
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  • sneak peak blue style avatar for user Shepherd Arnold
    can you add a negative number to a negative number
    (11 votes)
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    • duskpin ultimate style avatar for user EKTheAnimus🐺
      yes, you can add a negative number to a negative number. add the absolute value of each number together, put a negative sign in front, and you have your answer! for example, (-3)+(-3). the opposite of -3 is 3, so you add 3+3 and then put the negative sign back in front. 3+3 is 6, so the final answer to (-3)+(-3) is -6. i hope this helped ^^
      (12 votes)
  • blobby green style avatar for user s85248
    Why do two Negatives equal a positive. Why can't a Negative plus a Negative equal a Negative? Is it just a math rule or is just the way it goes?. For example
    "-2+(-3)=?". Thank you, that is my question.
    (3 votes)
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    • duskpin seedling style avatar for user Miriam O
      Two negatives equal a positive when you are multiplying or dividing. A negative plus a negative does equal a negative. You are moving down on the number line, so you are getting to smaller numbers.(-2+(-3))is the same as (-2-3). This equals (-5).
      (12 votes)
  • blobby green style avatar for user Manasa J
    can negative numbers be decimals
    (5 votes)
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  • piceratops ultimate style avatar for user Jakob Sims
    if math is so important then why do people hate math?
    (10 votes)
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    • piceratops ultimate style avatar for user Hecretary Bird
      Eating healthy is important, but some people hate vegetables. People generally don't like necessary things that don't give them immediate pleasure in exchange for long-term benefits. Math is one of these. When you work problems, you have to put in effort for no immediate return. However, you gain a better understanding of the world through math, and math can help you with various problems once you've put in the work to know the concept.
      (4 votes)
  • starky sapling style avatar for user Bryce Blanchard
    so if you with drawl $100,000 from the bank the bank will cont that as -100,000 but its adding to you.
    (6 votes)
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  • starky seed style avatar for user zhane.josey
    Can you still multiple negative with decimal?
    (5 votes)
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  • male robot johnny style avatar for user Alvin Ly
    I'm Sad :( i don't understand subtraction... for the negative
    (4 votes)
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    • leaf green style avatar for user Sandro Jinoridze
      There is 2 scenarios of subtraction for the negative, when subtract positive number from negative number and when you subtract negative number from negative number, shortly:

      1. -a-b (or -a-(+b) 'b' is positive number but + sign is usually omitted)

      2. -a-(-b)

      It is always handy to imagine '-a' as a point on a number line not just something from wonderland it's just a point on a numberline just as any other integer.

      Tricky things start with 'b'. I suggest thinking about it like this, positive numbers they are like honest dear people, they always act as they are expected to act when they are used to subtract from number (doesn't matter if it is negative or positive) they make number (in our case 'a') less than it was before subtraction same thing with addition they always make number bigger than it was.Negative numbers are like cunning and deceiving people they always do opposite of what they are expected to do when you subtract negative number they suddenly make number bigger than it was, same thing with addition they make number less then it was.

      Also it is helpful to always keep in mind that the farther from zero a negative number is, the smaller it gets, even though the integer is getting bigger because as I said negative numbers are like deceiving people they always act opposite of what they are look like

      P.S. In formula -a-(-b) ain't -(- looks like + sign it may help because
      -a-(-b) and -a+b is the same thing
      (4 votes)
  • blobby green style avatar for user Holly Lindner
    this is easy thank you for helping me
    (5 votes)
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