Calculator-Killer-3

Algebra Level 2

$A^* = A \color{#D61F06}{\div} A \color{#3D99F6}+ A \color{#20A900}{\times} A \color{#69047E}- A$

Evaluate:

$\large 10^* - 9^* + 8^* -7^* + 6^* - 5^* + 4^* -3^* +2^*-1^*$