35×526+65×534=35×526+65×(526+8)=35x526+65x526+65x8=(35+65)x526+520=100x526+520=52600+520=53120
原式=(100-65)x526+65x534 =100x526-65x526+65X534 =52600+65x(534-526) =52600+65x8 =52600+520 =53120