Below Zero
Part of the Numbers & Operations section of Coddy's Pre-Algebra journey. Lesson 13 of 60.
Numbers do not stop at zero. Below zero are the negative numbers, written with a minus sign: -1, -2, -3 and so on. You already know them from everyday life: a temperature of -3 degrees, a floor below the ground, an amount of money owed.
A number line shows them all in order. Zero sits in the middle, the positive numbers run to the right, and the negative numbers run to the left. The number -3 is three steps left of zero, while 2 is two steps right.
-3 is three steps left of zero; 2 is two steps right.
The minus sign tells you the direction and the digits tell you the distance. That one picture is enough to explain everything this chapter does with negative numbers.
Challenge
Mark -6 and 4 on the number line, then press Check.
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Numbers & Operations
1Working on the Board
Your First AnswerType the Next LineOne Line at a TimeDots and BarsFriendly ProductsRecap: Board Work4Adding Integers
Adding Two NegativesDifferent SignsZero PairsAdding Several IntegersRecap: Adding Integers2Order of Operations
Multiply Before AddingLeft to RightParentheses FirstBrackets Inside BracketsThe Fraction Bar GroupsRecap: Order of Operations5Subtracting Integers
Add the OppositeSubtracting a NegativePlus and Minus in a RowDistance Between NumbersRecap: Subtracting Integers