Additive inverse of zero is zero.

Find the values with the help of coloured discs.

$\left(-4\right)+\left(-5\right)$

Find the values with the help of coloured discs.

$\left(+6\right)+\left(+4\right)$

Find the values with the help of coloured discs.

$\left(-11\right)+\left(-7\right)$

Find the values with the help of coloured discs.

$\left(-2\right)+\left(-1\right)$

Find the values with the help of coloured discs.

$\left(+4\right)+\left(+2\right)$

Find the values with the help of coloured discs.

$\left(-3\right)+\left(-3\right)$