Opposite of?

What is the opposite number of 15?

Find the opposite of 15

Multiply 15 by -1

-1 * 15

Since 15 is positive:
the opposite must be negative

Multiply 15 by -1 to find the opposite:


Opposite of 15 = -(15) = -15


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Common Core State Standards In This Lesson
6.NS.C.6.A, 7.NS.A.1.A, 7.NS.A.1.B
What is the Answer?
Opposite of 15 = -(15) = -15
How does the Opposite Numbers Calculator work?
Free Opposite Numbers Calculator - Given a positive or negative integer (n), this calculates the opposite number of n
This calculator has 1 input.
What 1 formula is used for the Opposite Numbers Calculator?
Opposite of a positive number a = -1*a = -a
Opposite of a negative number -1 = -1 * -a = a
What 7 concepts are covered in the Opposite Numbers Calculator?
integer
a whole number; a number that is not a fraction
...,-5,-4,-3,-2,-1,0,1,2,3,4,5,...
negative
numbers or values less than 0
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
number line
a line on which numbers are marked at intervals, used to order numbers. Smaller numbers are on the left and larger numbers are on the right.
opposite
diametrically different; of a contrary kind.
opposite numbers
A number on the other side of the number line, with the same distance from zero
positive
numbers or values greater than 0
Example calculations for the Opposite Numbers Calculator
Opposite Numbers Calculator Video

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