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