Question

resolva as seguintes adições e subtrações, usando as regras de sinais:
a)+600 +300
b)+800 -400
c)-1000 -200
d)+600 +400 -1000
e)+300 -300
f)0 -800​

Answer 1

a)

$\colorbox{black}{\color{antiquewhite}{+600 +300} = \color{aqua}{ + 900}}$

b)

$</p><p>\colorbox{blue}{\color{aquamarine}{+800 -400}}\color{blue} {=+400}$

c)

$\colorbox{blue}{\color{red}{-1000 -200=-1200}} </p><p>$

d)

$\colorbox{black}{\color{antiquewhite}{+600 +400 -1000} = \color{aqua}{ 0}}$

e)

$\colorbox{black}{\color{antiquewhite}{+300 -300} = \color{aqua}{ 0}}$

f)

$\colorbox{blue}{\color{red}{0-800=-800}}$