其它
$$26+24-22+20-18+16-14+12-10+8-6+4-2=$$？． 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Addition and Subtraction ->Addition of Whole Numbers
$$=26+(24-22)+(20-18)+(16-14)+(12-10)+(8-6)+(4-2)$$  $$=26+2+2+2+2+2+2$$  $$=38$$． 