Matching Pairs matematica secundariaOnline version operaciones by Domingo Alejo Trinidad Salomon 1 -8-4-8+20 2 5-7-6 3 (-8+5) x 4= 4 8-4-9+7= 5 (2)4 = 6 -3-5-8 7 (-5) * (-8)= 8 (12x5) - 45 = 2x2x2x2 15 -16 40 0 2 -12 -8