In the previous articles we studied about the number line and integers. In this article we will explain what opposite numbers are, and how to identify them.

Question Types:

In the previous articles we studied about the number line and integers. In this article we will explain what opposite numbers are, and how to identify them.

Opposite numbers are numbers that when added together result in the number $0$.

**The opposite of a number has the same absolute value, but with opposite sign.**

**Examples:**

- $+3$ and $-3$ are opposite numbers.
- $+9.4$ and $-9.4$ are opposite numbers.
- $+\frac{1}{4}$ and $-\frac{1}{4}$ are opposite numbers (fractions).

Question 1

What is the opposite number of \( 0.7 \)

Question 2

What is the opposite number of \( 87 \)

Question 3

What is the opposite number of \( 5 \)

Question 4

What is the opposite number of \( -7 \)

Question 5

\( (+43)-(+15)= \)

What is the opposite number of $0.7$

$-0.7$

What is the opposite number of $87$

$-87$

What is the opposite number of $5$

$-5$

What is the opposite number of $-7$

$7$

$(+43)-(+15)=$

$28$

Question 1

\( (+71)+(-18)= \)

Question 2

What is the opposite number of \( -0.25 \)

Question 3

What is the opposite number of \( -\frac{8}{7} \)

Question 4

\( (+0.5)+(+\frac{1}{2})= \)

Question 5

\( (-2^2)-(-3\frac{3}{4})= \)

$(+71)+(-18)=$

$53$

What is the opposite number of $-0.25$

$0.25$

What is the opposite number of $-\frac{8}{7}$

$\frac{8}{7}$

$(+0.5)+(+\frac{1}{2})=$

$1$

$(-2^2)-(-3\frac{3}{4})=$

$-\frac{1}{4}$

Question 1

\( (-\frac{2}{4})-(+3.5)= \)

Question 2

\( (+\frac{18}{6})-(-\frac{1}{4})= \)

Question 3

\( (-3\frac{2}{6})+(-2.75)= \)

Question 4

\( (+2.16)+(-4\frac{1}{16})= \)

Question 5

\( (+x^2)+(-9)= \)

$(-\frac{2}{4})-(+3.5)=$

$-4$

$(+\frac{18}{6})-(-\frac{1}{4})=$

$3.25$

$(-3\frac{2}{6})+(-2.75)=$

$-6\frac{1}{12}$

$(+2.16)+(-4\frac{1}{16})=$

$-1.90625$

$(+x^2)+(-9)=$

$x=±3$