Basic features - Examples, Exercises and Solutions

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.

What are opposite numbers, and how to identify them?

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

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

Examples:

  • +3 +3 and 3 -3 are opposite numbers.
  • +9.4 +9.4 and 9.4 -9.4 are opposite numbers.
  • +14 +\frac{1}{4} and 14 -\frac{1}{4} are opposite numbers (fractions).
What are opposite numbers, and how to identify them

Practice Basic features

Exercise #1

What is the opposite number of 5 5

Video Solution

Answer

5 -5

Exercise #2

What is the opposite number of 87 87

Video Solution

Answer

87 -87

Exercise #3

What is the opposite number of 0.7 0.7

Video Solution

Answer

0.7 -0.7

Exercise #4

What is the opposite number of 7 -7

Video Solution

Answer

7 7

Exercise #5

What is the opposite number of 0.25 -0.25

Video Solution

Answer

0.25 0.25

Exercise #1

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

Video Solution

Answer

28 28

Exercise #2

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

Video Solution

Answer

53 53

Exercise #3

What is the opposite number of 87 -\frac{8}{7}

Video Solution

Answer

87 \frac{8}{7}

Exercise #4

(+0.5)+(+12)= (+0.5)+(+\frac{1}{2})=

Video Solution

Answer

1 1

Exercise #5

(+186)(14)= (+\frac{18}{6})-(-\frac{1}{4})=

Video Solution

Answer

3.25 3.25

Exercise #1

(24)(+3.5)= (-\frac{2}{4})-(+3.5)=

Video Solution

Answer

4 -4

Exercise #2

(22)(334)= (-2^2)-(-3\frac{3}{4})=

Video Solution

Answer

14 -\frac{1}{4}

Exercise #3

(x)2(+25)= (-x)^2-(+25)=

Video Solution

Answer

x=±5 x=±5

Exercise #4

(+2.16)+(4116)= (+2.16)+(-4\frac{1}{16})=

Video Solution

Answer

1.90625 -1.90625

Exercise #5

(326)+(2.75)= (-3\frac{2}{6})+(-2.75)=

Video Solution

Answer

6112 -6\frac{1}{12}

Topics learned in later sections

  1. Elimination of Parentheses in Real Numbers
  2. Addition and Subtraction of Real Numbers
  3. Multiplication and Division of Real Numbers
  4. Integers