Opposite numbers - Examples, Exercises and Solutions

What is the opposite number of $0.7$

$-0.7$

What is the opposite number of $5$

$-5$

What is the opposite number of $-7$

$7$

What is the opposite number of $87$

$-87$

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

$28$

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

$53$

What is the opposite number of $-0.25$

$0.25$

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

$\frac{8}{7}$

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

$1$

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

$-\frac{1}{4}$

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

$3.25$

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

$-4$

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

$-1.90625$

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

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

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

$x=±3$